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# Algebra

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For each function, what is the output of the given input?

For f(x) = 4x + 7, find f(4)

Nov 22, 2018

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Let's plug in the number 4 to all the $$x$$ s.

$$4(4)+7=4\times 4+7=16+7=23$$, so $$f(4)=23$$.

You are very welcome!

:P

Nov 22, 2018