2
Answer: BSet 2: Function Notation (Advanced)
Explanation
PROBLEM
If f(x) = 1x + 5 and g(x) = 2x + 2, find f(g(4)).
If f(x) = 1x + 5 and g(x) = 2x + 2, find f(g(4)).
A.
18
B.✓ Correct
15
C.
14
D.
17
Detailed Explanation
Choice B is the best answer. g(4) = 2(4) + 2 = 10. f(10) = 1(10) + 5 = 15
Why others are wrong:
A: 18 is incorrect because it does not satisfy the equation.
C: 14 is incorrect because it does not satisfy the equation.
D: 17 is incorrect because it does not satisfy the equation.