Hi there!
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I believe your answer is:
[tex]f(-6)=50[/tex]
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Here’s why:
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[tex]f(x)=5(3-x)+5\\------------\\\\\rightarrow f(-6)=5(3-(-6))+5\\\\\rightarrow f(-6)=5(9)+5\\\\\rightarrow f(-6)=45+5\\\\\rightarrow \boxed{f(-6)=50}[/tex]
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Hope this helps you. I apologize if it’s incorrect.
