SOLUTION: Please help - I'm lost here... Yellow Truck Co. advertises the following: 1. One way rental of a 15 ft. truck is $45.00 a day, and 37 cents per mile for every mile driven ove

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Question 141208: Please help - I'm lost here...
Yellow Truck Co. advertises the following:
1. One way rental of a 15 ft. truck is $45.00 a day, and 37 cents per mile for every mile driven over 500.
2. Round trip rental for the same truck is $30.00 per day , and 10 cents per mile for every mile driven over 250.
Gray Truck Co. offers the following:
1. One way rental of a 14 ft. truck is $40.00 per day, and 18 cents per mile for every mile driven over 300.
2. Round trip rental of the same truck is $20.00 a day, and 10 cents per mile driven.
a) For each company construct an equation that expresses the relationship between the income earned and miles traveled for a round trip
b) Graph, seperately, both of the equations that you constructed in part a).

Answer by vleith(2517) (Show Source):
You can put this solution on YOUR website!
We only care about the round trip prices in problem a)
Yellow m<=250 or m>250
m>250
m>250

Gray m > 0
The first plot is a horizontal line at 30 until 250 miles, then it becomes a lines with a slope of 0.1
The second plot is just a line with a y intercept at 20 and a slope of 0.1