Answer:
5/2
Step-by-step explanation:
1/2 + 6/2 + 5/2 = 12/2 or 6
(f - g)(x) = 4x +1 - ( x^2 - 5)
(f - g)(x) = 4x + 1 - x^2 + 5
(f - g)(x) = -x^2 + 4x + 6
Answer is C.
-x^2 + 4x + 6