\(Suppose that $g(x)=f^{-1}(x)$. If $g(-15)=0$, $g(0)=3$, $g(3)=9$ and $g(9)=20$, what is $f(f(9))$?\)
f(f(9)) = 20.
Thank you.
I also wanted to thank ginger and melody for answering the other question i asked, but it's locked now.
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+118 
