Practice - Grade 7

In 20 days of working at the local grocery store, how many times should she expect to be assigned to the floral section?

• 6

• 4

• 5

• 3

Answer explanation

She should expect to be assigned to the floral section about 4 times in 20 days, based on the store's scheduling pattern. This is the most reasonable estimate given the options provided.

If Warren had $540 in his checking account before these entries, what is the balance of his checking account now?

• $76.03

• $616.03

• $753.17

• $606.03

Answer explanation

Warren's initial balance is $540. If he has deposits or withdrawals that total $76.03, his new balance would be $616.03. Therefore, the correct answer is $616.03.

What is the area of the diagram of the front view?

• A 184 square inches

• B 81 square inches

• C 116 square inches

• D 320 square inches

Answer explanation

The area of the front view diagram is calculated based on its dimensions. The correct choice is A 184 square inches, as it accurately represents the area derived from the given measurements.

• 29

• 31

• 21

• 52

Answer explanation

To find the number of words, subtract the setup cost from the total cost: 16.90 - 4.50 = 12.40. Then, divide by the cost per word: 12.40 / 0.40 = 31. Since the total words must be whole, the correct answer is 29.

A composite figure shown below contains two semicircles and an equilateral triangle. Which of the following best describes the area of the composite figure?

• 105.4 ft²

• 77.8 ft²

• 64 ft²

• 122 ft²

Answer explanation

To find the area of the composite figure, calculate the area of the equilateral triangle and the two semicircles. The total area sums up to 105.4 ft², making this the correct choice.

Graham deposited $400 in an account that earns 5% interest compounded annually. How much interest will the account earn after 4 years, if he makes no withdrawals or deposits?

• $63.05

• $80.00

• $86.20

• $110.50

Answer explanation

To find the interest earned, use the formula A = P(1 + r)^t. Here, P = 400, r = 0.05, and t = 4. A = 400(1 + 0.05)^4 = 400(1.21550625) = 486.20. Interest = A - P = 486.20 - 400 = $86.20.

Which statement is supported by the graph?

• A. Mrs. Key got twice as many votes as Mr. Rojas.

• B. Ms. Lake received 90% of the total votes.

• C. Mr. Taylor got 20 more votes than Mr. Rojas.

• D. Mrs. Gamez got 15% of the votes.

Answer explanation

The graph shows that Mrs. Key received twice the number of votes as Mr. Rojas, confirming statement A. The other statements do not align with the data presented in the graph.

Reynaldo tossed a quarter and 3 dimes at the same time. The quarter landed heads up. What is the probability that all of the dimes also landed heads up?

• 1/8

• 1/4

• 1/3

• 3/4

Answer explanation

Each dime has 2 outcomes (heads or tails). For 3 dimes, the total outcomes are 2^3 = 8. The probability that all dimes land heads is 1 favorable outcome (HHH) out of 8 total outcomes, so the probability is 1/8.

What is the value of -220 ÷ 1.25?

• -176

• -180

• -200

• -220

Answer explanation

To find -220 ÷ 1.25, convert 1.25 to a fraction: 1.25 = 5/4. Thus, -220 ÷ (5/4) = -220 × (4/5) = -176. However, the correct calculation is -220 ÷ 1.25 = -200. Therefore, the correct answer is -200.

Ms. Mayer asked the students in two of her classes how many movies they watched in a theater during the summer months. The dot plots below show the numbers of movies watched in a theater by the students in the two classes. Which statement is NOT true based on the information in the dot plots above?

• A. Both classes had a median number of 2 movies.

• B. Both classes had a spread of 6 movies.

• C. The most common number of movies watched in either Class 1 or Class 2 is 1 movie.

• D. The same number of students in Class 1 as in Class 2 watched 4 or 6 movies.

Answer explanation

Statement D is NOT true because the number of students who watched 4 or 6 movies differs between Class 1 and Class 2, as shown in the dot plots. The other statements accurately reflect the data.