f(22)=9 and f^-1(13)=7
find f^-1(9) and f(7)
(given that these are 1-1 functions)
What does this mean as the have not given the equations they used to find the values, i know inverse function is the function that can find the opposite of the original function.
The Attempt at a Solution
Can someone help me see how to start to work out this problem??