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The amplitude of the trigonometric function shown below is defined as the average of the absolute values of the maximum value of f(x) and the minimum value of f(x). The trigonometric function graphed below can be described by the equation f(x) = a sin(bx + c), where a, b, and c are real numbers. Which of the following values describes the amplitude of this function?

(A) 1

(B) 2

(C) 3

(D) π

(E) 2π

The Correct Answer
Explanation

If 0° < θ < 90° and tan θ = , what is sin θ + cos θ?

(A) (B) (C) (D) (E)

Correct Answer: A

In the figure below, all line segments intersect at right angles, and all measurements are given in inches. What is the perimeter of the figure in inches? image

(A)23 (B) 28 (C) 46 (D) 130 (E) Cannot be determined

Correct Answer: C

To increase the mean of 5 numbers by 3, by how much would the sum of the 5 numbers need to increase?

(A)3 (B) 6 (C) 9 (D) 15 (E) 18

Correct Answer: D

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