Changing compounding frequency - Using annual, semiannual, and monthly compounding periods for each of the following, (1) calculate the future value if $3,000 is deposited initially, and (2) determine the effective annual rate (EAR).

a. At 10% annual interest for 4 years.

b. At 14% annual interest for 5 years.

c. At 20% annual interest for 7 years.