Relax

Respuesta :

faderedeadream6

Answer:

I hope this helps you

Step-by-step explanation:

y=x+9

x=y-9 f^-1 (x)= x-9

x=5 f^-1 (5)=5-9 = -4

f (f^-1))=f (-4)=?

x= -4

f (-4)=-4+9

f (-4)= 5

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