a. $520 to grow to $1,483.62 in 11 years b. $310 to grow to $519.90 in 6 years c. $53 to grow to $474.31 in 21 years d. $204 to grow to $289.38 in 6 years (Compound value solving for r) At what annual rate would the following have to be invested? a. $520 to grow to $1,483.62 in 11 years b. $310 to grow to $519.90 in 6 years c. $53 to grow to $474.31 in 21 years d. $204 to grow to $289.38 in 6 years