help please

For the function f, use composition of functions to show that f is as given. f(x) = 70x+1, f (x) = 10x - 10 7 To show that f (x) = 10x - 10 7 , find (f 'of) (x) and (f of-1 ) (x) and check to see that Beginning with (f- 'of) (x). ( f- ' of ) ( x ) = = = X Now start with (fof-1) (x). ( fof - 1 ) ( x ) = = = = X Enter your answer in the answer box