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8

Set 3: Linear Functions (Beginner)

Explanation

Answer: C

PROBLEM

If f(x) = 4x + 1, find f(3).

If f(x) = 4x + 1, find f(3).

A.

12

B.

8

C.

13

✓ Correct
D.

15

Detailed Explanation

Choice C is the best answer. f(3) = 4(3) + 1 = 13

Why others are wrong:
A: 12 is incorrect because it does not satisfy the equation.
B: 8 is incorrect because it does not satisfy the equation.
D: 15 is incorrect because it does not satisfy the equation.
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