1) Some time ago, Emily bought seven acres of land in Jackson for $68,400. This lands current value is $47,900 now.

a.) If the price of the land has been declining by 2.1% per year, for how long has she owned this land?

b.) At 6.2% rate, how long would it take to triple your money?

2) You invested $12,600 with an annual interest rate of 2.4% for the first 6 years. After that, you invested all the money and proceeds at 4.5% for the next 4 years. So, what was your annual rate of return over those 10 years?