SOLUTION: thanks for the help in advance trying to help a friend. Yellow trucking company for a round trip is 30$ and .10$ a mile after 250 miles Gray trucking company for a round trip i

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Question 293300: thanks for the help in advance trying to help a friend.
Yellow trucking company for a round trip is 30$ and .10$ a mile after 250 miles
Gray trucking company for a round trip is 20$ and .10$ a mile.
I know to graph this you use Y=mx+b
But i keep coming up with answers that are wrong because i am not sure were to start on graphing it or if i am doing something wrong.

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Yellow trucking company for a round trip is 30$ and .10$ a mile after 250 miles
Cost = $30 + $0.10(x-250) where x is the number of round trip miles.
Plot two points and draw a line thru them:
If x = 250, y = 30
If x = 350, y = 40
Plot the points (250,30) and (350,40)

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Gray trucking company for a round trip is 20$ and .10$ a mile.
Cost = $20 + $0.10x
If x = 100, y = 30
If x = 200, y = 40
Plot the points (100,30) and (200,40)

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Putting both on the same axis you get:

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Cheers,
Stan H.
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