3

Set 3: Function Notation (Beginner)

Explanation

Answer: B

PROBLEM

If f(x) = 4x - 1, find f(10).

If f(x) = 4x - 1, find f(10).

A.

37

B.

39

✓ Correct
C.

41

D.

40

Detailed Explanation

Choice B is the best answer. f(10) = 4(10) - 1 = 40 - 1 = 39

Why others are wrong:
A: 37 is incorrect because it does not satisfy the equation.
C: 41 is incorrect because it does not satisfy the equation.
D: 40 is incorrect because it does not satisfy the equation.