3
Answer: CSet 3: Function Notation (Intermediate)
Explanation
PROBLEM
If f(x) = 1x + 5 and g(x) = 4x + 3, find f(g(3)).
If f(x) = 1x + 5 and g(x) = 4x + 3, find f(g(3)).
A.
23
B.
17
C.✓ Correct
20
D.
22
Detailed Explanation
Choice C is the best answer. g(3) = 4(3) + 3 = 15. f(15) = 1(15) + 5 = 20
Why others are wrong:
A: 23 is incorrect because it does not satisfy the equation.
B: 17 is incorrect because it does not satisfy the equation.
D: 22 is incorrect because it does not satisfy the equation.