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6

Set 5: Function Notation (Intermediate)

Explanation

Answer: B

PROBLEM

If f(x) = 3x - 6, find f(7).

If f(x) = 3x - 6, find f(7).

A.

12

B.

15

✓ Correct
C.

14

D.

17

Detailed Explanation

Choice B is the best answer. f(7) = 3(7) - 6 = 21 - 6 = 15

Why others are wrong:
A: 12 is incorrect because it does not satisfy the equation.
C: 14 is incorrect because it does not satisfy the equation.
D: 17 is incorrect because it does not satisfy the equation.
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