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F (x)=4x-7 when f (x)=8
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F (x)=4x-7 when f (x)=8

User Linguanerd
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1 Answer

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Since both are equivalent to f(x), 4x-7 must equal 8
4x-7=8

Add 7 to both sides
4x= 15

Divide both sides by 4
x=15/4

Final answer: x=15/4
User Cmgchess
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