1. You made an investment of $9,000 into an account that paid you an annual interest rate of 3.2 percent for the first 6 years and 7.6 percent for the next 9 years. What was your annual rate of return over the entire 15 years?

2. Bob bought some land costing $15,990. Today, that same land is valued at $46,017. How long has Bob owned this land if the price of land has been increasing at 5 percent per year?