10

Set 4: Function Notation (Intermediate)

Explanation

Answer: A

PROBLEM

If f(x) = 6x + 2, find f(9).

If f(x) = 6x + 2, find f(9).

A.

56

✓ Correct
B.

54

C.

58

D.

53

Detailed Explanation

Choice A is the best answer. f(9) = 6(9) + 2 = 54 + 2 = 56

Why others are wrong:
B: 54 is incorrect because it does not satisfy the equation.
C: 58 is incorrect because it does not satisfy the equation.
D: 53 is incorrect because it does not satisfy the equation.

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