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4

Set 5: Linear Functions (Beginner)

Explanation

Answer: C

PROBLEM

If f(x) = 5x, find f(7).

If f(x) = 5x, find f(7).

A.

40

B.

30

C.

35

✓ Correct
D.

12

Detailed Explanation

Choice C is the best answer. f(7) = 5(7) = 35

Why others are wrong:
A: 40 is incorrect because it does not satisfy the equation.
B: 30 is incorrect because it does not satisfy the equation.
D: 12 is incorrect because it does not satisfy the equation.
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