You receive a $$$$10000$ check from your grandparents for graduation. You decide to save it toward a down payment on a house. You invest it earning $10\%$ per year and you think you will need to have $$$$20000$ saved for the down payment. How long will it be before the $$$$10000$ has grown to $$$$20000?$You are looking to buy a car and can afford to pay $$210$ per month. If the interest rate on a car loan is $0\mathrm{.}75\%$ per

month for a $60-$month loan, what is the most expensive car you can afford to buy?