2
Answer: ASet 3: Function Notation (Advanced)
Explanation
PROBLEM
If f(x) = 3x + 3 and g(x) = 3x + 3, find f(g(7)).
If f(x) = 3x + 3 and g(x) = 3x + 3, find f(g(7)).
A.✓ Correct
75
B.
74
C.
73
D.
77
Detailed Explanation
Choice A is the best answer. g(7) = 3(7) + 3 = 24. f(24) = 3(24) + 3 = 75
Why others are wrong:
B: 74 is incorrect because it does not satisfy the equation.
C: 73 is incorrect because it does not satisfy the equation.
D: 77 is incorrect because it does not satisfy the equation.