Correct Answer: A

Rationale: The correct answer is A: 16. When you multiply 8 by 2, the result is 16.
Choice B (22),
Choice C (24), and
Choice D (32) are incorrect as they do not represent the correct multiplication of 8 by 2.

Correct Answer: C

Rationale:
To find the largest positive number among the expressions, we evaluate each one:

A) (2 + 3)^2 = 5^2 = 25

B) 5 x 7 + 2 = 35 + 2 = 37

C) 10^2 - 4^2 = 100 - 16 = 84

D) (8 - 1) x 3 = 7 x 3 = 21

Therefore, the expression that results in the largest positive number is 10^2 - 4^2, which equals 84.

Choices A, B, and D result in smaller numbers.

Correct Answer: D

Rationale:
To maintain the ratio of 2 parts fruit juice to 3 parts seltzer, for every 2 parts of fruit juice, Gwen will need 3 parts of seltzer. Since a gallon of fruit juice is equivalent to 4 quarts, she will need 3 quarts of seltzer for every 2 quarts of fruit juice. For 4 quarts of fruit juice, she will require 6 quarts of seltzer.
Therefore, Gwen will need 6 quarts of seltzer to make the summer drink for her friends.
Choice A (3 quarts) is incorrect because it does not account for the correct ratio.
Choice B (4.5 quarts) is incorrect because it is not a whole number and does not align with the ratio provided.
Choice C (5 quarts) is incorrect as it does not match the proportional ratio of fruit juice to seltzer required.

Correct Answer: C

Rationale: If Uri sold 28 balloons,
Tommy sold 28 + 2 = 30 balloons. Since Serena sold 6 fewer balloons than
Tommy, she sold 30 - 6 = 24 balloons.
Therefore, Serena sold 24 balloons.
Choice A, 20 balloons, is incorrect because it doesn't consider the difference in sales between Serena and
Tommy.
Choice B, 22 balloons, is incorrect as it doesn't account for the correct relation between
Tommy and Serena's sales.
Choice D, 32 balloons, is incorrect as it doesn't align with the given information about the sales differences.

Correct Answer: B

Rationale:
To determine how much you save per bar when buying a value pack of 8 bars for $20, calculate the individual price per bar by dividing the total price by the number of bars: $20 · 8 = $2.50 per bar. When the pack price is lower than the individual price, you save money. The saving per bar is found by subtracting the pack price from the individual price: $2.50 (individual price) - $2.50 (pack price) = $0.40.
Therefore, you save 40 cents per bar by purchasing the value pack.
Choice A, 15¢, is incorrect because the actual saving is $0.40.
Choice C, 75¢, is incorrect as it doesn't match the calculated saving.
Choice D, $1.20, is incorrect as it is not the actual amount saved per bar.