Set 1: Linear Functions (Intermediate)

**Choice C is the best answer.** f(4) = 18, f(2) = 12. 18 - 12 = 6

Explanation

Answer: C

PROBLEM

If f(x) = 3x + 6, what is f(4) - f(2)?

✓ Correct

Detailed Explanation

Choice C is the best answer. f(4) = 18, f(2) = 12. 18 - 12 = 6

Why others are wrong:

A: 2 is incorrect because it does not satisfy the equation.

B: 12 is incorrect because it does not satisfy the equation.

D: 18 is incorrect because it does not satisfy the equation.