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Mathematics 13 Online
OpenStudy (anonymous):

The cost of a taxi ride is given by c = rd + a where r is the rate per one-fifth mile, d is the trip distance in terms of the number of one-fifth-mile units in the trip, and a is the flag-drop fee (an automatic charge created when the meter is started). Solve the equation for the mileage rate r.

OpenStudy (markrijckenberg):

Isolate r if you need to solve for r.

OpenStudy (markrijckenberg):

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