5
Answer: ASet 1: Function Notation (Advanced)
Explanation
PROBLEM
If f(x) = 3x + 5 and g(x) = 3x + 4, find f(g(4)).
If f(x) = 3x + 5 and g(x) = 3x + 4, find f(g(4)).
A.✓ Correct
53
B.
50
C.
54
D.
55
Detailed Explanation
Choice A is the best answer. g(4) = 3(4) + 4 = 16. f(16) = 3(16) + 5 = 53
Why others are wrong:
B: 50 is incorrect because it does not satisfy the equation.
C: 54 is incorrect because it does not satisfy the equation.
D: 55 is incorrect because it does not satisfy the equation.