10
Answer: ASet 1: Function Notation (Intermediate)
Explanation
PROBLEM
If f(x) = 3x + 2 and g(x) = 3x + 1, find f(g(7)).
If f(x) = 3x + 2 and g(x) = 3x + 1, find f(g(7)).
A.✓ Correct
68
B.
66
C.
69
D.
70
Detailed Explanation
Choice A is the best answer. g(7) = 3(7) + 1 = 22. f(22) = 3(22) + 2 = 68
Why others are wrong:
B: 66 is incorrect because it does not satisfy the equation.
C: 69 is incorrect because it does not satisfy the equation.
D: 70 is incorrect because it does not satisfy the equation.
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