SOLUTION: A rental car company offers two rental plans, Plan A and Plan B, for the same economy size car. For both plans, the total rental cost, ƒ(m) is a function of the number of miles, m,

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Question 1087992: A rental car company offers two rental plans, Plan A and Plan B, for the same economy size car. For both plans, the total rental cost, ƒ(m) is a function of the number of miles, m, that the car is driven. In addition to a flat fee of $75, Plan A offers a rate of $0.20 per mile for an unlimited number of miles. Plan B offers a higher mileage rate of $0.35 per mile but does not charge a flat fee for the rental.
I got the following solution for Plan A which is
t = f(m).20 + .75
and
t = f(m).35 but the rest I can not figure out because it doesn't come out right what am I doing wrong

Answer by htmentor(1343) About Me  (Show Source):
You can put this solution on YOUR website!
First of all, it seems you are mixing dollars and cents. The fixed cost should be 75, not 0.75.
Your equations should read:
Plan A: f(m) = 0.20m + 75
Plan B: f(m) = 0.35m
If you wanted to use these to find, for example, at what mileage do the two plans cost the same, you would set the cost equal and solve for m