Answer:
(f∘g)(x)=(2x+7)^3
Step-by-step explanation:
substitute g(x) in f(x)
(f∘g)(x)=f(g(x))=f(2x+7)=(2x+7)^3=(2x+7)^3
is it 20% I'm not really sure
Answer:650.46
C. y=11
6y-6=4y+16
6y=4y+22
2y=22
y=11
770 gallons