Set 3: Linear Functions (Intermediate)

**Choice B is the best answer.** f(3) = 7. 2f(3) = 14

Explanation

Answer: B

PROBLEM

If f(x) = 2x + 1, what is 2f(3)?

✓ Correct

Detailed Explanation

Choice B is the best answer. f(3) = 7. 2f(3) = 14

Why others are wrong:

A: 8 is incorrect because it does not satisfy the equation.

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

D: 7 is incorrect because it does not satisfy the equation.

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