(Compound value solving for r) At what annual rate would the following have to be invested? a. $500 to grow to $1,947.99 in 12 years b. $300 to grow to $422.13 in 7 years c. $50 to grow to $280.22 in 20 years d. $200 to grow to $497.66 in 5 years ... a. At what annual rate would $500 have to be invested to grow to $1,948.00 in 12 years? % (Round to the nearest whole percent.)

(Compound value solving for r ) At what annual rate would the following have to be invested? a. $500 to grow to $1,947.99 in 12 years b. $300 to grow to $422.13 in 7 years c. $50 to grow to $280.22 in 20 years d. $200 to grow to $497.66 in 5 years a. At what annual rate would $500 have to be invested to grow to $1,948.00 in 12 years? % (Round to the nearest whole perce.y.t.)