1. Interest-on-Interest Consider a $1,700 deposit earning 6 percent interest per year for 9 years. How much total interest is earned on the original deposit (excluding interest earned on interest)?
2. You want to buy a Volvo in 4 years, after you graduate from college. The car is currently selling for $35,000, and the price will increase at a rate of 5% per year. Your friend, Kim, introduces to you a one-time chance to earn 14% per year over the next 4 years. And you want to grab this chance to plan for your purchase. How much do you need to invest today so that you are able to buy your dream car after graduation?