8

Set 1: Function Notation (Beginner)

Explanation

Answer: D

PROBLEM

If f(x) = 5x + 7, find f(5).

If f(x) = 5x + 7, find f(5).

A.

31

B.

33

C.

35

D.

32

✓ Correct

Detailed Explanation

Choice D is the best answer. f(5) = 5(5) + 7 = 25 + 7 = 32

Why others are wrong:
A: 31 is incorrect because it does not satisfy the equation.
B: 33 is incorrect because it does not satisfy the equation.
C: 35 is incorrect because it does not satisfy the equation.