18. What is (f ⁰ g)(11) if f(x)=√x-3 and g(x)=x-7 ?
(f ⁰ g)(11)=5
(f ⁰ g)(11)=-1
(f ⁰ g)(11)=3√2-3
(f ⁰ g)(11)=√11-10