Which of the following correctly factors the expression 25*x*^{4} - 16*y*^{8}?

(F) (25 - 16)(x^{2} - y^{4})(x^{2} + y^{4})

(G) (5x^{2} - 4y^{4})(5x^{2} + 4y^{4})

(H) (25x^{2} - y^{4})(x^{2} + 16y^{4})

(J) (5x^{4} - 4y^{8})(5x^{4} + 4y^{8})

(K) (5x^{4} - 8y^{8})(5x^{4} + 2y^{8})

Eldridge opened a savings account with an initial balance of $1,000. After that, every month for 8 months, she made one deposit to the account, always for the same amount. During that time, she made just one withdrawal.

Which of the following graphs accurately describes these transactions over an 8-month period?

(F) (G) (H) (J) (K)

**Correct Answer: J**

The figure below shows a ramp for skateboarders. The base of the ramp is 25 feet long, and it rises at a 10° angle.

Given the trigonometric calculations in the table below, how high off the ground will a skateboarder be at the top of the ramp, rounded to the nearest 0.1 foot?

(F) 2.3 (G) 2.5 (H) 4.3 (J) 4.4 (K) 24.6

**Correct Answer: J**

If the least common multiple of 9, 10, 12, and vis 540, which of the following could be v?

(A) 18(B) 24(C) 27(D) 36(E) 45

**Correct Answer: C**

### More ACT Math Exam Questions

- 1
If

*x*is a real number and 3^{x}= 81, then 3 × 2^{x}=? - 2To this questions below, use the following graph, which provides information about the number of new clients five salespeople registered last month. Suppose that next month Victoria registers twice as many clients as she did this month and that each of the other four salespeople registers the same number of clients as he or she did this month. In this case, what percentage of clients will Victoria have registered?
- 3
At the company YouGroove, 35 employees work in the sales department and 50 employees work in the operations department. Of these employees, 15 work in both the sales and the operations departments. How many of the 110 employees at YouGroove do NOT work in either the sales or the operations departments?

- 4
Which of the following equations represents the linear relation shown in the standard (

*x,y*) coordinate plane below? - 5
This semester, Gerry scored an average of 93 on his five history exams. He got the same score on his first two exams, and then he got a 94, an 85, and a 90 on the remaining exams. What score did he receive on his first two exams?