Kathy purchased a new car for $37,800. From her research she has determined that it straight line depreciates over 14 years. She made a $7,000 down payment and pays $710 per month for her car loan.
a. Create an expense and depreciation function where x represents the number of months.
b. Graph these functions on the same axes.
c. Interpret the region before, at, and after the intersection point in the context of this situation.