2
Answer: DSet 1: Function Notation (Intermediate)
Explanation
PROBLEM
If f(x) = 4x + 1, find x when f(x) = 29.
If f(x) = 4x + 1, find x when f(x) = 29.
A.
4
B.
10
C.
9
D.✓ Correct
7
Detailed Explanation
Choice D is the best answer. 4x + 1 = 29. 4x = 28. x = 7
Why others are wrong:
A: 4 is incorrect because it does not satisfy the equation.
B: 10 is incorrect because it does not satisfy the equation.
C: 9 is incorrect because it does not satisfy the equation.