7
Answer: CSet 1: Function Notation (Intermediate)
Explanation
PROBLEM
If f(x) = 3x + 2 and g(x) = 3x + 5, find f(g(6)).
If f(x) = 3x + 2 and g(x) = 3x + 5, find f(g(6)).
A.
70
B.
68
C.✓ Correct
71
D.
74
Detailed Explanation
Choice C is the best answer. g(6) = 3(6) + 5 = 23. f(23) = 3(23) + 2 = 71
Why others are wrong:
A: 70 is incorrect because it does not satisfy the equation.
B: 68 is incorrect because it does not satisfy the equation.
D: 74 is incorrect because it does not satisfy the equation.