SOLUTION: 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

Algebra ->  Equations -> SOLUTION: 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       Log On


   

Question 1143964: 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.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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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.
write it:
rd + a = C
rd = C - a
divide both sides by d
r = %28%28C-a%29%29%2Fd, (rate is per 1/5 mile)