Question

f(x) = –x2+7x – 13
Find f(-3)

Answer 1

Hi there!  

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I believe your answer is:  

$f(-3)=-43$

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Here’s why:  

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$f(x)=-x^2+7x-3\\------------\\f(-3) = -(-3)^2+7(-3)-13\\\\\rightarrow f(-3) = -9 -21-13\\\\\rightarrow f(-3) = -30 - 13\\\\\rightarrow \boxed{f(-3)=-43}$

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Hope this helps you. I apologize if it’s incorrect.