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(Solution document) C = 0.25x+3500. The idea behind this problem is to demonstrate an understanding of the concepts of the slope and the y-intercept of a line.


C = 0.25x+3500. The idea behind this problem is to demonstrate an understanding of the concepts of the slope and the y-intercept of a line.  If you plug in x=0, you will obtain the cost C = 3,500 dollars. This shows that the cost for x=0 miles driven is $3,500.   The equation is already in the form y=mx+b. When you make the comparison, you can see that 0.25 mile/hour is the slope. Slope also indicates change in y/change in x. In this case 0.25 miles/hour indicates miles driven per hour.

 







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