Set 2: Linear Functions (Beginner)

**Choice C is the best answer.** f(3) = 7(3) = 21

Explanation

Answer: C

PROBLEM

If f(x) = 7x, find f(3).

✓ Correct

Detailed Explanation

Choice C is the best answer. f(3) = 7(3) = 21

Why others are wrong:

A: 14 is incorrect because it does not satisfy the equation.

B: 24 is incorrect because it does not satisfy the equation.

D: 10 is incorrect because it does not satisfy the equation.