8
Answer: BSet 5: Function Notation (Intermediate)
Explanation
PROBLEM
If f(x) = 2x - 5, find x when f(x) = 3.
If f(x) = 2x - 5, find x when f(x) = 3.
A.
1
B.✓ Correct
4
C.
6
D.
3
Detailed Explanation
Choice B is the best answer. 2x - 5 = 3. 2x = 8. x = 4
Why others are wrong:
A: 1 is incorrect because it does not satisfy the equation.
C: 6 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.