4

Set 2: Linear Functions (Intermediate)

Explanation

Answer: C

PROBLEM

If f(x) = 2x + 4, what is f(5) - f(3)?

If f(x) = 2x + 4, what is f(5) - f(3)?

A.

8

B.

2

C.

4

✓ Correct
D.

6

Detailed Explanation

Choice C is the best answer. f(5) = 14, f(3) = 10. 14 - 10 = 4

Why others are wrong:
A: 8 is incorrect because it does not satisfy the equation.
B: 2 is incorrect because it does not satisfy the equation.
D: 6 is incorrect because it does not satisfy the equation.