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4

Set 4: Linear Functions (Beginner)

Explanation

Answer: B

PROBLEM

If f(x) = x - 8, find f(20).

If f(x) = x - 8, find f(20).

A.

28

B.

12

✓ Correct
C.

160

D.

8

Detailed Explanation

Choice B is the best answer. f(20) = 20 - 8 = 12

Why others are wrong:
A: 28 is incorrect because it does not satisfy the equation.
C: 160 is incorrect because it does not satisfy the equation.
D: 8 is incorrect because it does not satisfy the equation.
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