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5

Set 5: Function Notation (Intermediate)

Explanation

Answer: B

PROBLEM

If f(x) = 7x - 4, find f(2).

If f(x) = 7x - 4, find f(2).

A.

8

B.

10

✓ Correct
C.

13

D.

12

Detailed Explanation

Choice B is the best answer. f(2) = 7(2) - 4 = 14 - 4 = 10

Why others are wrong:
A: 8 is incorrect because it does not satisfy the equation.
C: 13 is incorrect because it does not satisfy the equation.
D: 12 is incorrect because it does not satisfy the equation.
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