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Lyrx [107]
3 years ago
9

The output is seven more than the input

Mathematics
2 answers:
tiny-mole [99]3 years ago
5 0
X+7=? 

would be how that would be set up... just plug in numbers..
charle [14.2K]3 years ago
3 0
Y = x - 7

or 

f(x) = x - 7
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Dafna1 [17]

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<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20x%20%7B%7D%5E%7B2%7D%20%20%2B%2012x%20%2B%2036" id="TexFormula1" title="f(x)
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\displaystyle f^{-1}(225) = a

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\displaystyle \text{If } f^{-1}(225) = a\text{, then } f(a) = 225

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\displaystyle f(a) =225 = (a)^2 + 12(a) + 36

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\displaystyle \begin{aligned} 225 &= a^2 + 12a + 36 \\ \\ a^2 + 12a -189 &= 0 \\ \\ (a + 21)(a-9) &= 0\end{aligned}

By the Zero Product Property:

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In conclusion, our answer is B.

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