1. How much money must you deposit at 4% interest compounded quarterly in order to earn $406.04 interest in 1 year?
2. Savings Account How much money must you deposit at 2.1% interest compounded monthly in order to earn $347.58 interest in 3 years?
3. Interest Rate Clara would like to have $2100 in 7 years to give her granddaughter as a 21st birthday present. She has $1500 to invest in a 7-year certificate of deposit (CD). What rate of interest compounded annually must the CD earn?
4. Interest Rate Juan would like to have $2300 in 3 years in order to buy a motorcycle. He has $2000 to invest in a 3-year certificate of deposit (CD). What rate of interest compounded annually must the CD earn?