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6

Set 5: Linear Functions (Intermediate)

Explanation

Answer: C

PROBLEM

If f(x) = -x + 10, what is f(2) times f(3)?

If f(x) = -x + 10, what is f(2) times f(3)?

A.

15

B.

63

C.

56

✓ Correct
D.

24

Detailed Explanation

Choice C is the best answer. f(2) = 8, f(3) = 7. 8 times 7 = 56

Why others are wrong:
A: 15 is incorrect because it does not satisfy the equation.
B: 63 is incorrect because it does not satisfy the equation.
D: 24 is incorrect because it does not satisfy the equation.
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