Stacy paid $65.00 for a pair of shoes. she got them at 20% off, what was the original price?

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Ответ:

jordanwrighta1

12.03.2021

Mathematics

$(g\circ f)(x)=2x^2-7$

Step-by-step explanation:

So we have the two functions:

$f(x)=x^2-1\text{ and } g(x)=2x-5$

And we want to find:

$(g\circ f)(x)$

This is the same as:

=g(f(x))

So, substitute f(x) into g(x). Thus:

$g(x)=2x-5\\g(f(x))=2(x^2-1)-5$

Distribute the 2:

g(f(x))=2x^2-2-5

Subtract:

g(f(x))=2x^2-7

Therefore:

$(g\circ f)(x)=2x^2-7$

And we're done!

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