SOLUTION: Suppose that a car rental agency charges a fixed amount per day plus an amount per mile for renting a car. Heidi rented a car one day and paid $95 for 200 miles. On another day she

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Suppose that a car rental agency charges a fixed amount per day plus an amount per mile for renting a car. Heidi rented a car one day and paid $95 for 200 miles. On another day she      Log On


   

Question 1116603: Suppose that a car rental agency charges a fixed amount per day plus an amount per mile for renting a car. Heidi rented a car one day and paid $95 for 200 miles. On another day she rented a car from the same agency and paid $146 for 370 miles. Find the linear function f(x) (where x is in miles and f(x) is in dollars) that the agency could use to determine its daily rental charges.
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
Two points to form a line are (200,95) and (370,146).

f%28x%29-95=%28%28146-95%29%2F%28370-200%29%29%28x-200%29
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f%28x%29-95=0.3%28x-200%29
0.3x-60%2B95
highlight%28f%28x%29=0.3x%2B35%29

Fixed Fee, $35
Mile Rate, $0.30 per mile