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Suppose that f(x)=4x+5. What is \(f^{-1}(f^{-1}(9))\)?

 Jul 22, 2020
 #1
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\(f^{-1}(f^{-1}(9)) = \boxed{1}\)

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 Jul 23, 2020
 #2
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First I would find f -1(x)     

Have you done that?

What is it?

 Jul 23, 2020

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