Free TEAS Practice Test + PDF (80 Questions)

The correct answer is Option B.

In the beginning of the passage, we were told the year was 2018. Later in the passage, we were told the lady hasn’t seen her son since the American Revolutionary War which happened in the 1700’s. This leads us to believe there’s something suspicious about that piece of information as the timeline does not make sense for the year 2018.  The passage does not provide enough information to suggest that Theo will adopt the friendly dog as his own, forget about his experience in the woods, or become a hermit and live in the woods.

The correct answer is option C. A semicolon is used to join two independent clauses that are closely related in meaning and they don't have a conjunction to join them (and, but, or).

In option C, the semicolon is correctly used to join the two independent clauses "My favorite subjects are math, science, and English" and "I enjoy learning new things."

These clauses are closely related and the semicolon indicates a stronger connection between them than a period would.

Option A improperly uses semicolons to separate items in a list (milk, bread, and eggs). You normally use commas to separate items in a list unless the items you are separating already have commas as part of the items e.g. On our trip, we visited Albany, New York; Boston, Massachusetts; and Providence, Rhode Island.

Option B improperly uses a semicolon to join two independent clauses as there is already a conjunction (and) joining the two clauses, so the semicolon is not needed.

Option D improperly uses a semicolon to join two independent clauses as there is already a conjunction (but) joining the two clauses, so the semicolon is not needed.

A) Skeletal muscle is under voluntary control and is responsible for body movement, posture, and maintaining body position.

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B) Cardiac muscle is also under involuntary control but is found exclusively in the heart.

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C) Smooth muscle is under involuntary control and is found in the walls of internal organs such as the digestive tract, blood vessels, and the uterus.

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D) Striated muscle refers to both skeletal and cardiac muscle, which have a striped appearance under the microscope. This answer choice is not specific enough.

The procedure to convert from percentages to decimals or fractions is as follows:

Divide the percentage always by 100
$$
12.5\%  \div 100 = 0.125
$$

We see that none of the answer choices are 0.125, so maybe we need to convert the number with decimals into an equivalent fraction and see if one of the answer choices is on there but in fraction form. To convert a number with decimals into a fraction, do the following steps.

Extract the decimals and divide them by 10 if there is one decimal place, divide by 100 if there are two decimal places, or divide by 1000 if there are three decimal places. Remember decimals are the numbers to the right of the point so 125 in this case. For this problem, there are three decimal places (125) therefore we divide it by 1000.

$$
\frac{125}{1,000}
$$
Find the greatest common factor (GCF) of 125 and 1,000.  The greatest common factor is the largest number that neatly divides into 125 AND into 1,000. If you do some trial and error and just punch in different numbers into the calculator, you'll see the number 125 divides neatly into 125 and into 1,000 because
$$
\frac{125}{125}=1
$$
and
$$
\frac{1,000}{125}=8
$$
We put those two together to get
$$
\frac{1}{8}
$$
You need to learn how to convert from decimals to fractions but a trick would have been to take all the answer choices given as fractions and convert them to decimals to see if any other were equal to 0.125

The correct answer is B) A rectangle with a torn-off corner in the top right corner and a shaded square in the bottom right corner.To solve this question, the reader must carefully follow each of the instructions listed. The first step is to fold the paper in half, which creates a rectangle shape. The second step is to draw a circle in the top left corner of the paper and write their name in the center of the circle, underlining it twice. The third step is to draw a square in the bottom right corner of the paper and shade it in completely.The fourth step is to fold the paper in half again, which creates a smaller rectangle shape. The fifth step is to tear off the top right corner of the paper. The final shape of the paper is a rectangle with a torn-off corner in the top right corner and a shaded square in the bottom right corner, making answer choice B the correct answer.

We need to add a comma before the coordinating conjunction "but” because it joins two independent clauses: She said I could go to the party if I finished my homework and I didn't finish it

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Notice that option B) also has the conjunction “but”, but it doesnt require a comma. It is correct as it is. Let’s dissect that sentence.

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“The market is open not only on Saturday” is an independent clause; however, “ also on Sunday” which is the clause that follows the conjunction “but” is not an independent clause. It doesn’t have a subject + verb to make it an independent clause. For that reason, we do not add a comma before the conjunction “but”.

Homeostasis is the process by which the body maintains a consistent internal environment despite external fluctuations. In the endocrine system, homeostasis uses hormones to regulate various physiological parameters within set limits.

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Example: The hormone insulin, produced by the pancreas, regulates blood glucose levels. When blood sugar rises after a meal, the pancreas releases insulin, which facilitates the uptake of glucose by cells, thereby lowering blood sugar to maintain it within a tight range.

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‍Inter-gland communication refers to the coordinated interaction between different endocrine glands to achieve a specific physiological response. Some glands release hormones that act on other glands, stimulating or inhibiting their hormone production.

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Example: The hypothalamus produces corticotropin-releasing hormone (CRH), which stimulates the pituitary gland to release adrenocorticotropic hormone (ACTH). ACTH then prompts the adrenal cortex to produce cortisol. This is an example of a hormone cascade.

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The endocrine system oversees various growth and developmental milestones using specific hormones.

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Example: During puberty, the pituitary gland releases increased amounts of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). These hormones act on the gonads (ovaries in females and testes in males) to produce sex hormones (like estrogen and testosterone), which facilitate the development of secondary sexual characteristics such as breast development or facial hair growth.

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Vitamin D production is part of the integumentary system, not the endocrine system.

The goal here is to subtract $3\frac{1}{6}$ from $7\frac{3}{12}$ but before we can do that, we need to get rid of the mixed numbers (the 3 in $3\frac{1}{6}$ and the 7 in $7\frac{3}{12}$). After we do that, you can only add and subtract fractions when they have a common denominator (bottom number). We will need to convert our fractions to equivalent fractions that just have a common denominator between the two. Once that occurs, we can subtract the two fractions.

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Step 1: Simplify the mixed numbers
$7\frac{3}{12}$  can be simplified since $\frac{3}{12}$  can be reduced to a simpler form. The greatest common factor of 3 and 12 is 3. So, $\frac{3}{12}$  becomes
$$
3\div 3 =1
$$

$$
12 \div 3 =4

$$

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Now, the simplified fraction becomes 1/4. So, $7\frac{3}{12}$ simplifies to $7\frac{1}{4}$. The other mixed number, $3\frac{1}{6}$, is already in its simplest form and there’s no greatest common factor that can make the fraction 1/6 smaller.

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Step 2: Convert the mixed numbers to improper fractions.

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$7\frac{1}{4}$ becomes
$$
(7 \times 4) + 1 = 29
$$
The improper fraction is 29/4.

$3 \frac{1}{6}$ becomes
$$
(3 \times 6) + 1 = 19
$$
The improper fraction is 19/6.

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Step 3: Find a common denominator
The least common factor (LCF) of 4 and 6 is 12. So, the common denominator for the two fractions is 12.

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Step 4: Subtract the fractions
Convert both fractions to equivalent fractions with the common denominator:
‍

$$
29/4 = (29 \times 3) / (4 \times 3) = 87/12
$$

$$
19/6 = (19 \times 2) / (6 \times 2) = 38/12
$$

Now, subtract the fractions:
$$(87/12) - (38/12) = (87 - 38) / 12 = (49/12)$$

The difference (subtraction) between 7 3/12 and 3 1/6 is 49/12, which can be expressed as a mixed number: 4 1/12.

The passage suggests that Theo is a curious and inquisitive person. He is described as an adventurous boy who decides to explore the woods behind his house. He also exhibits curiosity when he approaches the cabin despite feeling scared and uncertain. The passage does not suggest that Theo is an experienced woodsman or good at following directions, as he becomes lost and needs the help of the friendly dog to find his way. Finally, while Theo does feel scared when lost, the passage does not suggest that he is easily frightened.

A is incorrect because the sentence structure implies that Sarah hurried up as a result of being late to the party. However, the correct meaning is that Sarah hurried up in order to avoid being late.

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B is correct because the sentence uses proper grammar and sentence structure to convey a clear, logical meaning. The cause-and-effect relationship between Sarah's lateness and her decision to hurry up is clearly communicated.

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C is incorrect because the placement of commas creates confusion and disrupts the flow of the sentence. The intended meaning is difficult to understand.

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D is incorrect because the comma placement and sentence structure are incorrect, making it difficult for the reader to understand the intended meaning. Proper grammar is essential for enhancing clarity in writing.

Sublimation is a process where a solid turns into a gas without first becoming a liquid. It is the opposite of deposition, where a gas turns directly into a solid without first becoming a liquid.

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Water: Incorrect. While water can undergo sublimation under specific conditions, it is more commonly associated with melting and boiling.Iron: Incorrect.

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Iron typically transitions from solid to liquid at its melting point and from liquid to gas at its boiling point. It does not commonly undergo sublimation.

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Dry Ice (solid carbon dioxide): Correct. Dry ice sublimates, meaning it transitions directly from a solid to a gas without passing through the liquid phase.Gold: Incorrect.

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Gold melts and boils but does not commonly undergo sublimation.

Recall that PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). Apply these rules in the given order to solve the expression:

‍
$$
5+3\times(4-2)\div(1+1)
$$
Step 1: Parentheses
First, solve the expressions within the parentheses:
$$
\displaylines{
(4-2)=2
\\
(1+1)=2
}
$$
Now, the expression becomes
$$
5+3\times2\div2
$$
Step 2: Exponents
There are no exponents in this expression, so we can skip this step.

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Step 3: Multiplication and Division (from left to right)
Next, perform multiplication and division in the order they appear, from left to right:
$$
3\times2=6
$$
The expression then becomes
$$
5+6\div2
$$
Now, divide:
$$
6\div2=3
$$
The expression becomes:
$$
5+3
$$
Step 4: Addition and Subtraction (from left to right)
Finally, perform addition and subtraction in the order they appear, from left to right:
$$
5+3=8
$$
The answer is 8

The correct answer is Option A. Even if you didn’t already know the meaning of the phrase “when pigs fly”, you could’ve inferred the meaning of it by looking at the context of the sentence. The phrase “they've been at the bottom of the league for so long that it seems impossible for them to turn things around” gives us an idea that the phrase “when pigs fly” has to do with something difficult.

Solution: The correct answer is option "c" A dependent clause is a clause that cannot stand alone as a sentence and functions as a noun, adjective, or adverb within a sentence.

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In option "c" "After the storm passed" is a dependent clause because it does not express a complete thought on its own and relies on the independent clause "the sky cleared up" to complete the sentence.

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Option "a" is a simple sentence that contains only one independent clause, "The sun was shining brightly." Option "b" is also a simple sentence that contains only one independent clause, "She ran a marathon in under three hours."

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Option "d" is a compound sentence that contains two independent clauses, "The dog barked loudly at the mailman” and “the mailman walked away from it”.

a) The testes produce sperm, but they do not store them. Sperm production occurs in the seminiferous tubules within the testes.

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b) The epididymis is responsible for storing and maturing sperm. Sperm travels from the testes to the epididymis, where they mature and are stored until ejaculation.

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c) The vas deferens is a muscular tube that transports mature sperm from the epididymis to the ejaculatory duct during ejaculation.

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d) The seminal vesicles produce a significant portion of the seminal fluid that nourishes and protects sperm during ejaculation, but they do not produce or store sperm.

Use PEMDAS to solve this question. Follow the steps in the correct order:

Parentheses (P)
Exponents (E)
Multiplication and Division (M and D)
Addition and Subtraction (A and S)

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Step 1: Parentheses
Evaluate the expressions inside the parentheses:
$$
\displaylines{
(1/4 + 1/2)
\\
\text{and}
\\
(2/3 - 1/6)
}
$$
Convert the fractions to decimals and solve the inside of the parentheses e.g. 1 divided by 4 equals 0.250 and 1 divided by 2 equals 0.5
$$
\displaylines{
(0.250 + 0.500)=0.750
\\
\text{and}
\\
(0.667 - 0.1667)=0.500
}
$$
Step 2: Exponents
There are no exponents in the expression, so we can skip this step.

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Step 3: Multiplication and Division
Multiply the two fractions:
$$
0.750\times0.500=0.375
$$
Step 4: Addition and Subtraction
There are no addition or subtraction operations left, so the final result is 0.375. The provided options are in fraction form. Convert 0.375 into a fraction.
$$
\frac{375}{1000}
$$
Simplify the fraction.

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The greatest common factor (GCF) of 375 and 1000 is 125.

We divide the numerator and denominator by 125 to get simplified fraction of 3/8

Add flour mix to egg yolk mix is the second step that involves flour.

A well-organized passage begins with a clear topic sentence that introduces the main idea of the whole paragraph. The main idea of this whole paragraph is how Emperor Nero behaved as an emperor. Sentences I and III are acceptable options for the topic sentence, although sentence III is a bit better since it follows a chronological order.

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The rest of the sentences (I, II, V) are supporting details to the initial topic sentence. Meanwhile, sentence IV is a conclusion to the whole paragraph discussing the end of Nero’s life and therefore the end of his time as emperor.

To measure the mass of something, we can use kilograms (kg) or grams (g). However, kilograms is more appropriate to be used when measuring the mass of a large object like a human or an animal. Grams is more appropriate when measuring the mass of small of very small objects like a pinch of baking soda or a pinch of sugar when cooking a recipe.

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cm^3 and mL are units for volume. Volume refers to the 3D space an object takes. For example, when we say "I bought a gallon of milk" (gallon is another volume unit), a gallon refers to how much 3D space that milk is taking. It is not referring to how much a milk weighs.

To find the range of a set of numbers, follow these steps:

1) Identify the smallest and largest numbers in the set.
2) Subtract the smallest number from the largest number.

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Step 1: Identify the smallest and largest numbers
In the given set ${12, 7, 20, 9, 15}$, the smallest number is 7 and the largest number is 20.

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Step 2: Subtract the smallest number from the largest number
$$
\displaylines{
\text{Range = Largest number - Smallest number}
\\
\text{Range} = 20 - 7
\\
\text{Range} = 13
}
$$
The range of the given set of numbers is 13. The correct answer is 13.

The correct answer is C as it farther elaborates on the sense of patriotism Romans were characterized by. Other answer choices just talk the logistics or facts about  the Roman Republic.

There are no spelling errors in the original sentence.

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Learn the most common spelling rules of the english language in particular the use of "its" vs. "it's" and "their" vs. "they're

The ureter is a muscular tube that connects the kidney to the bladder and is responsible for transporting urine from the renal pelvis to the bladder for storage and elimination. The urethra is the tube that carries urine out of the body, while the bladder is a muscular sac that stores urine until it is eliminated.

Convert all the numbers into decimal form and then we can arrange them from least to greatest.

5/8= 0.625

$\frac{-6}{2} = -3$

$\sqrt{49}=7$

A square root ($\sqrt{49}$) is asking us what number multiplied by itself equals 49. In this case, 7 does.

$\sqrt{60}$, there is no whole number that after multiplied by itself equals 60. However, we can approximate what the number could be. So we know that  $\sqrt{60}$  is equal to some number that after multiplied by itself is equal to 60, let’s do some trial and error and see if we can get close to 60. Seven times itself equals 49, eight times itself equals 64. So we know that whatever number multiplied by itself is somewhere between 7 and 8. That is enough info to know where$\sqrt{60}$ falls in the least of least to greatest. We know $\sqrt{60}$ is more than 7.0 but it’s less than 8.0.

Therefore, from least to greatest

$$
\frac{-6}{2},5/8,\sqrt{49},\sqrt{60}
$$

The correct answer is C. The author's perspective on Thomas Edison is negative, as evidenced by the passage's pessimistic tone and critical language. The author suggests that Edison was a ruthless and unethical businessman who exploited other people's ideas and inventions, and that his inventions were often impractical and failed to live up to their hype. The passage's overall message is that Edison's legacy is not one of creativity and progress, but of greed and exploitation. Therefore, option C is the best choice as it accurately reflects the author's perspective on Thomas Edison.

A complex sentence is a sentence that contains an independent clause and one or more dependent clauses.

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c) joins a dependent clause “Even though it was raining” with an independent clause “we decided to go for a walk in the park”

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A compound sentence is a sentence that has at least two independent clauses joined by a comma, semicolon, or conjunction. There are no dependent clauses in a compound sentence.

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a) joins two independent clauses together: “I finished my work early” and “I went to the gym to work out”

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b) joints two independent clauses together: “Although I am allergic to cats” and “I still love them”

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A simple sentence is a sentence that consists of just one independent clause. A simple sentence has no dependent clauses.

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d) They went for a walk in the park

An ionic compound is made of positively and negatively charged ions held together by electrostatic attraction, usually formed between a metal and a nonmetal (e.g., NaCl). In ionic compounds, the electrons are trasferred from one element to another e.g. when paired, Na is giving its electrons to Cl and Cl giving its electrons to Na.

Meanwhile, a covalent bond is when the electrons are shared between the two nonmetal elements e.g. NF₃

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NH₃ – Covalent: Nonmetal + nonmetal (nitrogen and hydrogen) share electrons.

NCl₃ – Covalent: Nonmetal + nonmetal (nitrogen and chlorine) share electrons.

KCl – Ionic: Metal (potassium) transfers electrons to nonmetal (chlorine).

NF₃ – Covalent: Nonmetal + nonmetal (nitrogen and Flouride) share electrons.

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To solve this algebra problem, follow these steps:

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Distribute the 2 on the right side of the equation.
Move all $x$ terms to one side of the equation and all constants to the other side.
Solve for $x$.

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Step 1: Distribute the 2 on the right side
$$
\displaylines{
3x - 7 = 2\cdot x + 2\cdot 4
\\
3x - 7 = 2x + 8
}
$$
Step 2: Move all $x$ terms to one side and all constants to the other side
$$
3x - 2x = 8 + 7
$$
Now that the x terms are on one side and the constants are on the other side, perform the arithmetic.
$$
\displaylines{
3x-2x = x
\\
\text{and}
\\
8+7 =15
}
$$
Therefore, the equation becomes $x = 15$

The correct answer is C) Publicly electing Supreme Court justices would increase transparency and accountability. While the passage does mention that the appointment of Supreme Court justices is a contentious issue in American politics, this is not the main idea of the passage. The main idea is that the current system lacks transparency and is undemocratic, and that a better solution would be to elect Supreme Court justices through a public voting process. This would increase transparency and accountability, ensuring that justices are directly accountable to the people they serve and eliminating the influence of political elites. Option C directly states this idea, making it the correct answer.

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Option A is too general and doesn't capture the main focus of the passage, which is on the problems with the current system and the proposed solution of publicly electing Supreme Court justices.

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Option B is a supporting detail that explains one of the reasons why the current system is problematic, but it does not capture the main idea of the passage.

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Option D is a supporting detail that explains how publicly electing Supreme Court justices would help to eliminate the influence of political elites in the appointment process, but it does not capture the main idea of the passage.

The correct way to spell it is: The virus's origin is still under investigation.

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Despite "virus" ending in "s", the word is singular and for singular words ending in "s" we add an apostrophe and another "s" at the end.

The digestive system is responsible for breaking down food into nutrients that can be absorbed and utilized by the body. The digestive system includes organs such as the mouth, esophagus, stomach, small intestine, and large intestine, as well as accessory organs such as the liver, pancreas, and gallbladder.

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The liver is the largest glandular organ in the body and is located in the upper right side of the abdomen. One of the functions of the liver is to produce bile, which is a greenish-yellow fluid that is essential for the digestion and absorption of fats. Bile contains bile salts, which emulsify fats into smaller droplets, making them more accessible to enzymes that break them down into fatty acids and glycerol.

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The bile produced by the liver is stored and concentrated in the gallbladder before being released into the small intestine through the common bile duct. The pancreas also secretes pancreatic enzymes into the small intestine to further break down the fats, proteins, and carbohydrates.

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Option A is incorrect because the pancreas secretes enzymes that aid in the digestion of carbohydrates, proteins, and fats, but it does not produce bile. Option B is incorrect because the gallbladder stores and releases bile, but it does not produce bile. Option D is incorrect because the stomach secretes gastric juice that contains hydrochloric acid and enzymes that begin the breakdown of proteins, but it does not produce or store bile.

To solve this algebra problem, follow these steps:

Simplify the exponent expression

$(x-4)^2$ is the same as $(x-4)(x-4)$

So our equation becomes

$$8 [ (x-4)(x-4) ] = 120$$

Use the FOIL method to simplify $(x-4)(x-4)$

$$x\cdot x + x\cdot -4 + -4\cdot x + -4\cdot -4$$

Which simplifies to

$$x^2 + -4x + -4x + +16$$

Which further simplifies to

$$x^2  + - 8x + 16$$

When you multiply opposite signs (example: plus times a minus), the result is a negative. When you multiple the same signs (example: negative times a negative), the result is a positive. Therefore,

$+(-8x)$ becomes $-8x$

$+(+16)$ becomes $16$

Therefore, $(x-4)(x-4)$ becomes $x^2 -8x + 16$ after using the FOIL method.

Therefore, $8[ (x-4)(x-4) ] = 120$ becomes $8 [ x^2 -8x +16 ] = 120$

Using PEMDAS, we multiply what’s inside the parentheses by 8.
$$\displaylines{8 [ x^2 -8x + 16 ] = 120\\8x^2 - 64x + 128 = 120}$$
Which further simplifies to
$$\displaylines{8x^2 - 64x = 120-128\\8x^2 - 64x = -8}$$

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The correct answer is C) A better solution would be to elect Supreme Court justices through a public voting process.

‍

This sentence contains an opinion because it expresses a belief or judgment about the issue at hand, which is the appointment of Supreme Court justices. The phrase "a better solution" indicates that the author is advocating for a particular course of action, which is to elect justices through a public voting process. In contrast, the other sentences in the passage present facts, arguments, or critiques, but they do not express a clear opinion on the matter.

‍

Answer choice A presents a statement about the contentious nature of the issue, answer choice B presents a critique of the current system, and answer choice D presents a potential benefit of public elections, but none of them express a subjective perspective or preference.

The word "disparate" means different, diverse, or unequal.

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In the context of the sentence, "disparate opinions" refers to the different or diverse opinions that the team members had, which made it difficult for them to reach a consensus and move forward with the project in a cohesive manner. Option B, "diverse," accurately reflects this meaning and is the correct answer. Option A, "similar," is not accurate because the sentence states that the opinions are different. Option C, "equal," is not accurate because the sentence does not suggest that the opinions are equal. Option D, "consistent," is not accurate because the sentence states that the opinions are not consistent, but rather diverse.

Fertilization, which is the fusion of sperm and egg, typically occurs in the fallopian tubes. The fallopian tubes connect the ovaries to the uterus. If an egg is fertilized, it moves to the uterus where it can implant in the uterine wall and develop throughout pregnancy.

Strategy:
Calculate the cost of the small cups of coffee.
Calculate the cost of the large cups of coffee.
Add the costs to find the total cost.

‍

Step 1: Calculate the cost of the small cups of coffee
Cost per small cup = \$1.50
Number of small cups = 4
Total cost for small cups = \$1.50 × 4 = \$6.00

‍

Step 2: Calculate the cost of the large cups of coffee
Cost per large cup = \$2.25
Number of large cups = 3
Total cost for large cups = \$2.25 × 3 = \$6.75

‍

Step 3: Add the costs to find the total cost
Total cost = Total cost for small cups + Total cost for large cups
Total cost = \$6.00 + \$6.75 = \$12.75

‍

The total cost for 4 small cups and 3 large cups of coffee will be \$12.75. The correct answer is \$12.75

He was an adventurous boy

Answer choice A: Casual and informalThis answer is incorrect because in a business setting, it's important to maintain a professional demeanor and to present oneself as competent and credible. Using casual or informal language can detract from this and may not be perceived as appropriate or respectful.

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Answer choice B: Formal and professionalThis answer is correct. Using formal and professional language in a business setting helps establish credibility, demonstrates respect for the audience, and conveys the message effectively.

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Answer choice C: Technical and specializedThis answer is not necessarily incorrect, but it depends on the context and the specific audience. In some cases, a highly technical or specialized audience may expect and appreciate technical language, but in other cases, this type of language may be too complex or off-putting for the audience.

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Answer choice D: Conversational and friendlyThis answer is not necessarily incorrect, but it also depends on the context and the specific audience. In some cases, a more conversational and friendly approach may be appropriate, especially if the speaker is trying to establish rapport with the audience. However, in a business setting, it's usually best to err on the side of formality and professionalism.

a) Incorrect - An unsaturated solution contains less solute than the maximum amount it can dissolve.

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b) Incorrect - A saturated solution cannot dissolve more solute at the current temperature, as it already contains the maximum amount of solute that can be dissolved.

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c) Correct - A saturated solution contains the maximum amount of solute that can be dissolved at the current temperature, reaching a state of equilibrium between the dissolved solute and any undissolved solute.

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d) Incorrect - A saturated solution is not always a solid. It can be a liquid, where the solvent has dissolved the maximum amount of solute possible at a given temperature.

Strategy:
Calculate the discount amount for each item.
Subtract the discount amount from the original price to find the sale price of each item.
Add the sale prices to find the total cost.

‍

Step 1: Calculate the discount amount for each item
Discount rate = 20% = 0.20
Shirt discount = \$45 × 0.20 = \$9
Pants discount = \$60 × 0.20 = \$12

‍

Step 2: Subtract the discount amount from the original price to find the sale price of each item
Shirt sale price = \$45 - \$9 = \$36
Pants sale price = \$60 - $12 = \$48

‍

Step 3: Add the sale prices to find the total cost
Total cost = Shirt sale price + Pants sale price
Total cost = \$36 + \$48 = \$84

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The total cost of the purchase after the discount will be \$84. The correct answer is  \$84.

The correct answer is A. It accurately summarizes the main points of the passage, including the period of turmoil and upheaval during Nero's reign, his controversial behavior, his role in the Great Fire of Rome, and his eventual downfall at the hands of the Roman Senate. B, C, and D are all incorrect because they either contain significant inaccuracies or omit key points from the passage.

The correct answer is option "a." There should be a comma after “eat”. Otherwise, you’re saying that you should eat grandma as opposed to inviting grandma to eat.

Antibodies, also known as immunoglobulins, are proteins produced by B cells in response to exposure to foreign substances such as bacteria or viruses. They work by binding to the surface of the pathogen and marking it for destruction by other immune cells, or by neutralizing the pathogen's ability to infect host cells. While macrophages are responsible for phagocytosis, T cells are involved in activating immune responses and producing cytokines that recruit immune cells.

Strategy:
Calculate the discount amount.
Subtract the discount amount from the original price.

‍

Step 1: Calculate the discount amount
Discount rate = 25%
Original price of headphones = \$80
Discount amount = Original price × Discount rate = \$80 × 0.25 = \$20

‍

Step 2: Subtract the discount amount from the original price.
Discounted price = Original price - Discount amount = \$80 - \$20 = \$60

‍

After the 25% discount is applied, the headphones will cost \$60.

According to the legend on the right side of the figure, dark red represents the hottest temperatures (more than 85 degrees Fahrenheit). Most of the dark red shading is within the boundaries of the state of Arizona.

B is correct because it effectively uses a participial phrase ("Excited and nervous") to modify the subject ("her heart") and provide information about the person's feelings. The sentence structure is clear and easy to understand, demonstrating how proper grammar can enhance clarity in writing.

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A is incorrect because it places the adjectives "excited" and "nervous" after the verb "raced," making it unclear what the adjectives are modifying. The sentence structure is confusing and does not effectively convey the person's feelings.

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C is incorrect because it places the comma after "approached," which makes the adjectives "excited" and "nervous" unclear in their role as modifiers. The sentence structure is less clear than option A.

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D is incorrect because the use of two commas around "and nervous" disrupts the flow of the sentence, making it less clear than option A. The sentence structure in option A is more concise and effectively conveys the person's feelings.

a) Incorrect - Chemical reactions can either release energy (exothermic) or absorb energy (endothermic).
b) Incorrect - According to the law of conservation of mass, the total mass of reactants is equal to the total mass of products in a chemical reaction.
‍

‍
c) Correct - Chemical reactions involve the rearrangement of atoms to form new substances, by breaking existing chemical bonds and forming new ones.
‍

‍
d) Incorrect - Chemical reactions can occur under various conditions, not only in the presence of heat.

Strategy:
Convert the percentage to a decimal.
Multiply the total number of books sold by the decimal value.

‍

Step 1: Convert the percentage to a decimal
$$
75\% = 0.75
$$
Step 2: Multiply the total number of books sold by the decimal value

‍

Total books sold = 120
Fiction books sold = Total books sold × Decimal value = 120 × 0.75 = 90

‍

The bookstore sold 90 fiction books last month.

The correct answer is B.

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The passage states that deep learning algorithms allow machines to learn and improve on their own, without human intervention, and that this has led to major breakthroughs in fields such as image and speech recognition. Option A is incorrect, as the passage explicitly states that AI has made significant strides in recent years.

‍

Option C is incorrect, as the passage states that reinforcement learning involves teaching machines to make decisions based on feedback from their environment, not random inputs.

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Option D is incorrect, as the passage states that reinforcement learning has led to significant progress in areas such as robotics and autonomous vehicles, as well as game-playing AI systems.

The correct answer is option "a." "Who" is a subject pronoun used to ask about a person, while "whose" is a possessive pronoun used to indicate ownership. In option "a," "who" is used correctly to ask about the subject of the sentence, and "whose" is not necessary since the sentence does not ask about ownership.
‍

Option "b" is incorrect because "whose" should be followed by a noun to indicate ownership. Option "c" uses "who's" correctly as a contraction of "who is," but "jacket" should follow "whose" to indicate ownership. Option "d" is incorrect because "whose" is used correctly to indicate ownership, but "you" should be replaced with "you're" to make the sentence grammatically correct.

A) This statement is incorrect. During inhalation, the diaphragm contracts and moves downward (or flattens), not upward.

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B) This statement is the opposite of what happens. Inhalation increases the volume of the thoracic cavity, creating a negative pressure that draws air into the lungs.

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C) This statement is also incorrect. During inhalation, the external intercostal muscles contract, lifting the ribs outward and upward, further increasing the volume of the thoracic cavity.

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D) This statement is correct. The contraction and flattening of the diaphragm play a pivotal role in increasing the thoracic cavity's volume, facilitating the entry of air into the lungs.

First, find out how many books are 50% more than the number of books read by Amy. Amy read 12 books, so:
$$
\text{50% of 12 books = 0.5 * 12 = 6 books}
$$Now, add this number to the number of books read by Amy because the question is asking who read 50% more.
$$\text{12 books + 6 books = 18 books}$$We are looking for the student who read 18 books. From the table, we can see that Ben read 18 books.

A good argument should NOT include unsupported claims or personal attacks. The sentence that reads as "millionaires and billionaires live eccentric lives, often from inheritances and not from their own work" feels more like a personal attack compared to other sentences in the passage.

B is incorrect because the use of informal language, such as "like" and "totally," is not appropriate for a professional business proposal. This type of language may be perceived as unprofessional or even disrespectful.

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A is correct because it uses formal language and conveys the idea in a clear, concise manner. This type of language is appropriate for a professional business proposal, as it demonstrates professionalism and respect for the audience.

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C is incorrect because it uses informal language, such as "Dude," and an overly casual tone. This type of language is not suitable for a professional business proposal.

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D is incorrect because it uses vague and informal language, such as "pretty cool and stuff," which does not effectively convey the importance of the product or its potential impact on the market.

a) Adenosine monophosphate (AMP) is not the primary source of energy for muscle contraction. It is a product of the breakdown of ATP and can be converted back into ATP.

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b) Adenosine diphosphate (ADP) is also not the primary energy source for muscle contraction. It is an intermediate product when ATP is broken down to release energy.

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c) Adenosine triphosphate (ATP) is the primary source of energy for muscle contraction. ATP is broken down into ADP and inorganic phosphate (Pi) to release energy, which powers muscle contraction.

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d) Glycogen is a storage form of glucose in muscles and the liver. It can be broken down into glucose, which is then used to produce ATP, but it is not the direct source of energy for muscle contraction.

According to the red line of the graph, the lowest point of the curve occurred around February 2009.

The correct answer is D, "Tilapia has higher levels of inflammatory omega-6 fatty acids than omega-3 fatty acids." This information supports the author's claim that people should avoid consuming tilapia because the imbalance of omega-6 and omega-3 fatty acids can lead to chronic inflammation and other health problems.

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Choice A, "Tilapia is a popular fish species that is consumed worldwide," is not relevant to the author's argument.

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Choice B, "Tilapia is often raised in crowded, unsanitary conditions, which can lead to disease and infection," is a reason why people should avoid consuming tilapia, but it is not the strongest support for the author's claim as the passage doesn’t state in which way humans are affected by it.

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Choice C, "Many tilapia farms use large amounts of antibiotics and other chemicals to keep the fish healthy," is also a reason to avoid consuming tilapia, but it is not the strongest support for the author's claim as the passage doesn’t state in which way humans are affected by antibiotics.

A) "The pervasive impact of climate change has been felt across various ecosystems, necessitating immediate global action". This topic sentence introduces a paragraph or section about the widespread effects of climate change and the urgency of addressing it.

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B) "Advancements in technology over the past decade have revolutionized the way businesses operate and interact with their customers". This topic sentence sets the stage for a discussion on the transformative role of recent technological developments in the business world.

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C) "Mindfulness practices, rooted in ancient traditions, have gained immense popularity in recent years for their proven benefits in reducing stress and improving overall well-being". This topic sentence would lead into a paragraph or section about the rise in popularity and benefits of mindfulness practices

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D) "After grabbing my morning coffee, I usually take a short walk in the park before heading to work". This sentence is more of a descriptive or narrative detail rather than a statement that introduces or summarizes the main idea of a paragraph or section that is to follow.

The organelle mentioned in the question header is the mitochondrion.

Mitochondria are involved in ATP production, apoptosis, contain their own DNA, have a double membrane, and are believed to have originated from an ancient symbiotic relationship with a prokaryote. While mitochondria can buffer calcium levels, the primary organelle for calcium signaling is the endoplasmic reticulum, not the mitochondria.

The median can be calculated by sorting all the numbers in increasing order and then taking the average of the two numbers in the middle.

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In increasing order, the number of crashes during the six month study period go like this: $$1, 3, 3, 4, 5, 10$$The two numbers in the middle of the list are 3 and 4. The average of these two can be found by adding them together and dividing the result by 2. $$(3+4)/2=3.5$$

The other answer choices either contain information that was never said or incorrectly implied.

A is correct because the use of the transition word "while" effectively highlights the contrast between the two different approaches to problem-solving. This enhances the clarity of the sentence by helping the reader understand the comparison being made.

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B is incorrect because the absence of a transition word makes the sentence less clear and harder to understand. The reader may not immediately grasp the comparison being made between the two approaches.

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C is incorrect because the sentence structure is incorrect, making it difficult for the reader to understand the intended meaning. The use of "on the other hand" is not appropriately placed within the sentence.

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D is incorrect because the use of the transition word "so" implies a cause-and-effect relationship between the two approaches, which is not the intended meaning. The sentence should highlight the contrast between the two approaches, not suggest that one approach is the result of the other.

A) False. Adaptive immunity does not provide immediate protection upon first exposure to a pathogen. Instead, it takes time to develop a specific response. Innate immunity provides the immediate, non-specific defense.

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B) False. Adaptive immunity is highly specific. It tailors its response to specific pathogens, distinguishing between different invaders.

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C) True. One of the hallmarks of adaptive immunity is its ability to remember previous exposures to pathogens. This memory allows the immune system to respond more rapidly and effectively upon subsequent exposures to the same pathogen.

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D) False. Physical barriers like skin and mucous membranes are part of the innate immune system, not the adaptive immune system. Adaptive immunity is primarily mediated by specialized cells like T cells and B cells and the antibodies they produce.

Step 1: Find the total number of outcomes when flipping the coin 3 times.
When flipping a coin, there are 2 possible outcomes: heads (H) or tails (T). Since the coin is flipped 3 times, the total number of outcomes is 2 is raised to the third power. Therefore, $2^3 = 8.$

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Step 2: Determine the number of outcomes with exactly 2 heads and 1 tail.
The possible outcomes with exactly 2 heads and 1 tail are: HHT, HTH, and THH. There are 3 such outcomes.

‍

Step 3: Calculate the probability.
Probability = (Number of desired outcomes) / (Total number of outcomes)
Probability = 3 / 8

‍

The probability of getting exactly 2 heads and 1 tail when flipping a fair coin 3 times is 3/8.

The other answer choices are not points of view of the author on the construction industry.

"Loose" (adjective) means something is un-tight or is lost. Meanwhile, "lose" (verb) means to misplace, get rid of, or not win.

In Option B, "loose" is used correctly to describe the screws on the chair being too un-tight.

Option A should use "lose" as the person is misplacing his keys.

Option C should be "lose" as the the person is wanting to get rid of weight before the wedding.

Option D should be "loose" as the cat is misplaced.

a) The liver produces bile, which is essential for the digestion and absorption of fats in the small intestine.

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b) The pancreas produces digestive enzymes and hormones, such as insulin and glucagon, but it does not produce bile.

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c) The gallbladder stores and concentrates bile produced by the liver, but it does not produce bile itself.

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d) The appendix is a small, finger-like pouch that is connected to the large intestine, but its function is not well understood and it does not produce bile.

To answer this question, analyze the relationship between the two variables:

‍

As the number of hours spent watching television increases, the students' GPAs tend to decrease.

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The two variables are moving in opposite directions (one increases while the other decreases). This relationship indicates a negative correlation between the number of hours spent watching television and the students' GPAs.

An interview of Albert Einstein about his move to America from Europe is considered a primary source of information because it is a firsthand account of Einstein's life by Einstein himself. The other answer choices are all secondary sources. They are told by other people about Einstein.A quote from Albert Einstein is also a primary source of information but a quote about the speed of light wouldn't tells us much about his life.

The correct way to write this sentence is: The child wore a bear-themed costume to the party.

‍

We put a hyphen after a noun (e.g. bear) when the noun is being used as an adjective despite not being one. In this case, the word "bear" is used in conjunction with "themed" to describe the word "costume." Neither "bear" nor "themed" are adjectives. They are nouns being used as adjectives.

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If we were to use an actual adjective over a noun that is being used as an adjective, we wouldn't have to use a hyphen. For example, we could say:

‍

The child wore a bear costume to the party.

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Other examples of needing to use hyphens when using nouns or verbs as adjectives are:

‍

She bought the latest eye-catching dress from the store.

He wore a water-resistant watch to the beach.

She wore a blue-green dress to the event.

The chef prepared a mouth-watering dish for the guests.

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Parathyroid hormone (PTH) is produced by the parathyroid glands and is responsible for regulating calcium levels in the body. It acts to increase calcium levels in the blood by promoting the breakdown of bone tissue and increasing the absorption of calcium from the intestines and kidneys. Insulin and glucagon are hormones produced by the pancreas that regulate blood glucose levels, while thyroid hormone regulates metabolic rate and growth.

To answer this question, analyze the given information:

‍

As the number of pages of assigned reading increases, the average time students spend completing the reading also increases.
The two variables are moving in the same direction (both increase).

‍

This relationship indicates that as the number of pages of assigned reading increases, the average time students spend completing the reading also increases.

The other answer choices are not the PRIMARY claim of the passage

When using "either/or," the verb tense should agree with the subject (the person or object) closer to the verb.

Option A is correct because the subject (brother) closest to the verb is singular and so is the conjugation of the verb to be (is).

Option B is correct because the subject (friends) closest to the verb is plural and so is the conjugation of the verb (were).

Option C is correct because the subject (I) closest to the verb is singular and so is the conjugation of the verb to be (am).

Option D is incorrect because the subject (he) closest to the verb is singular, but the conjugation of the verb (are) is in plural. To be correctly written, the sentence would need to say:

Either they or he is going to be late for the meeting.

a) Incorrect - Temperature affects the rate of a chemical reaction by providing kinetic energy to the reactant molecules. An increase in temperature typically increases the reaction rate as molecules move faster and collide more frequently and with greater energy.

‍

b) Correct - The color of reactants does not affect the rate of a chemical reaction, as it is not related to the reaction kinetics or the nature of the substances involved.

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c) Incorrect - Concentration of reactants affects the rate of a chemical reaction, as a higher concentration usually results in more frequent collisions between reactant molecules, increasing the reaction rate.

‍

d) Incorrect - The presence of a catalyst can significantly affect the rate of a chemical reaction by providing an alternative reaction pathway with a lower activation energy, increasing the rate of the reaction without being consumed in the process.

The area of a square or rectangle can be calculated by multiplying the width by the length.

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The area of one parking spot is
$$
18\mathrm{ ft } \times 9\mathrm{ ft } = 162 \mathrm{ ft^2 } \text{ per spot}
$$

‍
If there are 40 parking spots, the total area for all the parking spots is
$$
162  \mathrm{ft^2}  \times 40 = 6,480  \mathrm{ft^2}
$$

The passage discusses the Roman Republic and its government structure, but the overarching theme is the emphasis on civic duty and patriotism in Roman society. The passage mentions how Romans were expected to put the needs of the state above their own interests, and how military service was seen as a way to earn honor and social status. Option A, the rise and fall of the Roman Republic, is a possible topic but not the main theme of this particular passage. Option D, the complexity of the Roman government system, is a detail discussed in the passage but not the main theme. Option C, the military tactics and organization of the Roman army, is a specific aspect of the passage but not the main theme.

Answer choice C gives us an introduction of the topic that is about follow (topic sentence, but furthermore it also gives us the author's opinion or judgement on the overall topic ( social media's impact as positive interactions and challenges in mental well-being).

Insulin is produced by the beta cells of the pancreas and is responsible for lowering blood glucose levels by promoting glucose uptake into cells. Glucagon, on the other hand, is produced by the alpha cells of the pancreas and raises blood glucose levels by promoting glycogenolysis and gluconeogenesis.

Convert the length of a blue whale from meters to feet. We were told 1 meter is equal to 3.28 feet.

‍

Use ratios to calculate the length of a blue whale in feet.
$$
\frac{1\mathrm{m}}{3.28\mathrm{ft}}=\frac{30\mathrm{m}}{x}
$$

‍
Where $x$ is a variable that represents the length of a blue whale in feet.

‍

Cross multiply and then solve for $x$
$$
\displaylines{
1\mathrm{m} \cdot x = 3.28\mathrm{ft} \cdot 30 \mathrm{m}
\\
x = 98.4 \mathrm{ft}
}
$$