You have just graduated from college and purchased a car for $8000. your credit limit is $20,000. assume that you make no payments and purchase nothing more and that there are no other fees. the monthly interest rate is 12%. find the y-intercept for the exponential function which represents how much you will owe (represented by y) after x months with no more purchases or payments. a. (0, 20,000) c. (0, 8000) b. (8000, 0) d. (20,000, 0)