(Compounding using a calculator) Bart Simpson, age 9, wants to be able to buy a roally cool new car when he tums 18 . His realy cool car costs 518,000 taday, and its coat is expected to inciease 2 percent annually. Bart wants to make one depost todsy (he can sell his mint-oondtion original Nuclear Boy comic book) into an account paying 8.1 percent antualy in order to buy his car in 9 yean. How much will Bart's car cost, and how much doos Bart have to save today in order to buy this car at age 18 ? a. How much will Bart's car cost after 9 years? (Round to the nearest cent.) b. How much does Bart have to save today in order to buy this car at age 18 ? (Rigund to the nearest cont.)