6
Answer: ASet 3: Function Notation (Advanced)
Explanation
PROBLEM
If f(x) = 3x + 1 and g(x) = 3x + 1, find g(f(3)).
If f(x) = 3x + 1 and g(x) = 3x + 1, find g(f(3)).
A.✓ Correct
31
B.
29
C.
30
D.
28
Detailed Explanation
Choice A is the best answer. f(3) = 3(3) + 1 = 10. g(10) = 3(10) + 1 = 31
Why others are wrong:
B: 29 is incorrect because it does not satisfy the equation.
C: 30 is incorrect because it does not satisfy the equation.
D: 28 is incorrect because it does not satisfy the equation.