Troyb0y Troyb0y

02-07-2017
Mathematics

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Find the value of f(-4) if f(x) = x2 + 7.

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royalranger royalranger

02-07-2017

Just plug in -4 everywhere you see an x:
f(x) = 2x + 7
f(-4) = 2(-4) + 7
f(-4) = -8 + 7
f(-4) = -1

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