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For f(x)= -4x+5, find f(-4) + f(3) 

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For f(x)= -4x+5, find f(-4) + f(3) 

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Posted (Answer #1)

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Using the formula, we get

`f(-4)=-4(-4)+5=16+5=21` and

`f(3)=-4(3)+5=-12+5=-7,` so

`f(-4)+f(3)=21+(-7)=14.`

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