6
Answer: BSet 1: Function Notation (Advanced)
Explanation
PROBLEM
If f(x) = 6x + 0, find x when f(x) = 18.
If f(x) = 6x + 0, find x when f(x) = 18.
A.
4
B.✓ Correct
3
C.
1
D.
6
Detailed Explanation
Choice B is the best answer. 6x + 0 = 18. 6x = 18. x = 3
Why others are wrong:
A: 4 is incorrect because it does not satisfy the equation.
C: 1 is incorrect because it does not satisfy the equation.
D: 6 is incorrect because it does not satisfy the equation.