Set 5: Linear Functions (Beginner)

**Choice A is the best answer.** f(6) = 2(6) + 7 = 19

Explanation

Answer: A

PROBLEM

If f(x) = 2x + 7, find f(6).

✓ Correct

Detailed Explanation

Choice A is the best answer. f(6) = 2(6) + 7 = 19

Why others are wrong:

B: 15 is incorrect because it does not satisfy the equation.

C: 21 is incorrect because it does not satisfy the equation.

D: 13 is incorrect because it does not satisfy the equation.