SOLUTION: For the function f(x)=x+9 , find ( f º f ^–1)(5).

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Question 399995: For the function f(x)=x+9 , find ( f º f ^–1)(5).
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=x%2B9
f%5E%28-1%29%28y%29=y-9 (How to find this - let write function f(x)=x+9 in this way y=x+9, if you solve this for x you'll receive x=y-9 this is f%5E%28-1%29%28y%29)
so f%5E%28-1%29%285%29=5-9=-4