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What is a good score on the ACT?

The ACT is scored on a scaled score of 1 to 36. The national average ACT score is 21. However, every school has a different score requirement.

The Northampton Volunteer Association has built a rectangular sandbox for a local elementary school and is ready to fill it with sand. The sandbox is 60 inches wide, 72 inches long, and will be filled 18 inches deep. Under the assumption that 1 bag of sand can fill 3,600 cubic inches of the sandbox, what is the minimum number of bags of sand they will need in order to fill the sandbox?

(A) 1 (B) 7 (C) 12 (D) 21 (E) 22

Correct Answer: E

On a sonar map in the standard (x,y) coordinate plane, the Yellow Submarine and the Sandwich Submarine are located at the points (-7,4) and (-2,6), respectively. Each unit on the map represents an actual distance of 5 nautical miles. Which of the following is closest to the distance, in nautical miles, between the two submarines?

(A) 5 (B) 19 (C) 27 (D) 30 (E) 67

Correct Answer: C

The graph of the trigonometric function f(x) = 2 sin x is represented below. Which of the following is true of this function?

（A）f(x) is a 1:1 function (that is, x is unique for all f(x) and f(x) is unique for all x). （B） f(x) is undefined at x = 0. （C） f(x) is even (that is, f(x) = f(-x) for all x). （D） f(x) is odd (that is, f(-x) = -f(x) for all x). （E） f(x) falls entirely within the domain -6 ≤ x ≤ 6.

Correct Answer: D