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Answer: CSet 4: Function Notation (Intermediate)
Explanation
PROBLEM
If f(x) = 3x + 4 and g(x) = 4x + 1, find f(g(7)).
If f(x) = 3x + 4 and g(x) = 4x + 1, find f(g(7)).
A.
92
B.
89
C.✓ Correct
91
D.
94
Detailed Explanation
Choice C is the best answer. g(7) = 4(7) + 1 = 29. f(29) = 3(29) + 4 = 91
Why others are wrong:
A: 92 is incorrect because it does not satisfy the equation.
B: 89 is incorrect because it does not satisfy the equation.
D: 94 is incorrect because it does not satisfy the equation.