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How would you write the equation of $f(x) = 4^x$ that reflects over the line $y = 3$?

I've put in $f(x) = 3 + 4^{-x}$ which I thought was the right answer, but it isn't.

Thanks in advance!

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1 Answer 1

Hint: Reflecting around $y=3$ sends $y$ to $6-y$

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