6
Answer: CSet 2: Function Notation (Advanced)
Explanation
PROBLEM
If f(x) = 2x + 4 and g(x) = 1x + 5, find g(f(2)).
If f(x) = 2x + 4 and g(x) = 1x + 5, find g(f(2)).
A.
15
B.
12
C.✓ Correct
13
D.
11
Detailed Explanation
Choice C is the best answer. f(2) = 2(2) + 4 = 8. g(8) = 1(8) + 5 = 13
Why others are wrong:
A: 15 is incorrect because it does not satisfy the equation.
B: 12 is incorrect because it does not satisfy the equation.
D: 11 is incorrect because it does not satisfy the equation.