at a carnival, you pay $15 for admission, plus $3 for each ride that you go on.

a. write a function A(r) that models the amount "A", in dollars, that you would spend to ride "r" rides at a carnival.

b. find the inverse of A(r). show work.

c. what does the equation inverse of the function found in part b represent in the context of the problem? explain your answer. ​