Suppose that $g(x) = f^{-1}(x)$. If g(-15) = 0, g(0) = 4, g(3) = 9, and g(9) = 3, what is f(f(9))?
To inverse a function, you can switch x and y.
f(0) = -1
f(4) = 0
f(9) = 3
f(3) = 9
Can you find f(f(9))?
=^._.^=
