Which of the following is a possible solution for x in terms of k for the equation ?

(F)

(G)

(H)

(J)

(K)

To make space for new merchandise, a clothing store offered a 15% discount on all current stock.What is the sale price of a jacket that regularly sells for $42?

（A）$6.30 （B） $8.40 （C） $35.70 （D） $37.80 （E） $41.85

**Correct Answer: C**

The coordinates of the vertices of *MON* are shown in the standard (*x*,*y*) coordinate plane below. Rectangle *MPQR* is shown shaded. Point *P* lies on , point *Q* lies on , and point *R* lies on .

What is the value of cos (*MON*)?

(A) (B) (C) 2 (D) (E)

**Correct Answer: B**

Which of the following trigonometric functions has an amplitude of 3?

(Note: the amplitude of a trigonometric function is the nonnegative difference between the maximum and minimum values of the function.)

(F) f(x) = sin x (G) f(x) = cos 3x (H) f(x) = sin(x) (J) f(x) = 3 tan x (K) f(x) = 3 cos x

**Correct Answer: K**

### More ACT Math Exam Questions

- 1The expression is equivalent to:
- 2In triangle ABC below, the measure of angle A is 20° and the measure of angle B is 3 times larger than the measure of angle C. What is the measure of angle B?
- 3
Jane ran around the perimeter of a rectangular park at a constant rate of 10 feet per second. The park has an area of 67,500 square feet, and its length is exactly three times its width. For how many seconds did Jane run?

- 4
Which of the following numbers is an imaginary number?

- 5What value of x makes the equation 8x - 2(x - 5) = 2x - 20 true?