Answer:
b
Step-by-step explanation:
C. x < 40
x/5 - 3 < 5
x/5 -3 + 3 < 5 + 3
x/5 < 8
(5/1) x/5 < 8 (5/1)
x < 40
(f-g)(x) is given by -x^2+4x+6
