document.write( "Question 399995: For the function f(x)=x+9 , find ( f º f ^–1)(5). \n" ); document.write( "
Algebra.Com's Answer #283343 by Tatiana_Stebko(1539)\"\" \"About 
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\"f%28x%29=x%2B9\"
\n" ); document.write( "\"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\")
\n" ); document.write( "so \"f%5E%28-1%29%285%29=5-9=-4\"
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