Question: what is the inverse of the function g(x)=-2/3x-5?
Answer: Divide x x by 1 1 . Since g(f(x))=x g ( f ( x ) ) = x , f−1(x)=3x2+152 f - 1 ( x ) = 3 x 2 + 15 2 is the inverse of f(x)=23x−5 f ( x ) = 2 3 x - 5 .