8
Answer: BSet 2: Function Notation (Advanced)
Explanation
PROBLEM
If f(x) = 1x + 2 and g(x) = 1x + 1, find g(f(3)).
If f(x) = 1x + 2 and g(x) = 1x + 1, find g(f(3)).
A.
5
B.✓ Correct
6
C.
3
D.
9
Detailed Explanation
Choice B is the best answer. f(3) = 1(3) + 2 = 5. g(5) = 1(5) + 1 = 6
Why others are wrong:
A: 5 is incorrect because it does not satisfy the equation.
C: 3 is incorrect because it does not satisfy the equation.
D: 9 is incorrect because it does not satisfy the equation.