SOLUTION: a car rental company charges a base fee for each car rented, in addition to a fee for each mile driven. If a person drives a car for 200 miles, the total charge is $25. If a person

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: a car rental company charges a base fee for each car rented, in addition to a fee for each mile driven. If a person drives a car for 200 miles, the total charge is $25. If a person      Log On


   

Question 1114465: a car rental company charges a base fee for each car rented, in addition to a fee for each mile driven. If a person drives a car for 200 miles, the total charge is $25. If a person drives a car for 300 miles, the total charge is $35
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52847) About Me  (Show Source):
You can put this solution on YOUR website!
.
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Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
y, total rental cost
x, how many miles driven

Two points (x,y) described: (200, 25) and (300, 35)
y=mx%2Bb
y=%28%2835-25%29%2F%28300-200%29%29x%2Bb
y=%285%2F100%29x%2Bb
y=%281%2F20%29x%2Bb
-
b=y-x%2F20
b=25-200%2F20
b=25-10
b=15
-
highlight%28y=x%2F20%2B15%29


The rate per mile charge is 1%2F20 or 0.05 dollars per mile.
The base fee to rent any car is $15.