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1

Set 2: Function Notation (Advanced)

Explanation

Answer: A

PROBLEM

If f(x) = 6x + 1, find x when f(x) = 19.

If f(x) = 6x + 1, find x when f(x) = 19.

A.

3

✓ Correct
B.

1

C.

4

D.

2

Detailed Explanation

Choice A is the best answer. 6x + 1 = 19. 6x = 18. x = 3

Why others are wrong:
B: 1 is incorrect because it does not satisfy the equation.
C: 4 is incorrect because it does not satisfy the equation.
D: 2 is incorrect because it does not satisfy the equation.
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