Your best friend John is willing to sell his brand new car to you at a negotiated price which he is willing to keep unchanged for 15 years. You have paid $5,000 to John to lock the deal. However, you still need to pay $20,000. If you could invest the rest of your savings of $8,000 at an annual interest rate of J1 = 5%, how much money can you accumulate within 15 years and would you be able to buy his car? Please answer this question.