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Use f(x)=-2x+5 to find x when f(x)=11
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Use f(x)=-2x+5 to find x when f(x)=11

User Dmytro Ivanov
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When it asks this question, ultimately you want to plug 11 into x because its f(x). 11=-2+5.

Then you subtract 5 on both sides because of the opposite of addition is subtraction.

6=-2x

now divide on both sides

x=-3
User Realn
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