Annuity. At what interest rate will a payment of

Annuity. At what interest rate will a payment of

a. $683 grow to 6,890.80 over a period of 7 years?
b. $558 grow to 15,610.04 over a period of 14 years?
c. $802 grow to 8,530.58 over a period of 8 years?
d. $721 grow to 6,884.91 over a period of 8 years?

CLICKHERE FOR SOLUTION