For all t > 0, f(t) = 
. Which of the following is true about f(t) ?
(A) It increases in proportion to t.
(B) It increases in proportion to t2.
(C) It decreases in proportion to t.
(D) It decreases in proportion to t2.
(E) It remains constant.
The point (24,3) on a standard (x,y) coordinate plane is halfway between points (z,2z + 1) and (15z,z - 4). What is the value of z?
(F) 1 (G) 1.5 (H) 3 (J) 7 (K) 24
Correct Answer: H
Which of the following could be a value of x if 11 < x < 12?
（A）
（B） 
（C） 
（D） 
（E） 
Correct Answer: C
Point C (1,2) and point D (7,-10) lie in the standard coordinate plane. What are the coordinates of the midpoint of 
?
(F) (1, 8) (G) (3,-6) (H) (4,-4) (J) (4,-6) (K) (7,-4)
Correct Answer: H
More ACT Math Exam Questions
- 1The width of a rectangular cardboard box is half its length and twice its height. If the box is 12 cm long, what is the volume of the box in cubic centimeters?
- 2
The graph of y = f(x) is shown in the standard (x,y) coordinate plane below with points V, W, X, Y, and Z labeled.
If y = f(x) is to be reflected across the line y = x, which of the following graphs represents the result?
- 3
In the (x,y) coordinate plane below, points P (6,2) and Q (1,4) are two vertices of ΔPQR. If
PQR is a right angle, then which of the following could be the coordinates of R?
- 4
Which of the following is equal to sin xsec x?
- 5
If
, then n =