4) (20 points) A new luxury car costs $36,000. Zion can pay cash now and purchase the luxury car or he can go with the dealer's installment offer - equal payments payable at the end of each month over a 2-year period at 0% interest rate for a small monthly processing fee of $115 that needs to be paid along with each monthly payment. I claim that Zion will end up paying an effective annual rate of approximately 7.44% if he chooses the installment offer. Do you agree with me? Show work to support your