Question 970031
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C=total charge; m=miles; x=charge per mile; f=daily fee
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C=f+xm Subtract f from each side.
C-f=xm Divide each side by m.
(C-f)/m=x
ANSWER: The rate per mile equals (total charge - daily fee) divided by the mileage.
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{{{(C-f)/m=x}}}
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{{{(130dollars-30dollars)/25miles=x}}}
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{{{100dollars/25miles=x}}}
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{{{4 dollars/mile=x}}} The rate was $4.00 per mile.