(Compound value solving for r) At what annual rate would the following have to be invested? a. $520 to grow to $1,212.45 in 11 years b. $290 to grow to $530,13 in 7 years c. 547 to grow to $40480 in 19 years d. $216 to grow to $272.70 in 4 years a. At what annual rate would $520 have to be invested to grow to $1,212.45 in 11 years? % (Round to the nearest whole percent.) b. At what annual rate would $290 have to be to invested to grow to $530.12 in 7 years? % (Round to the nearest whole percent.) c. At what annual rate would $47 have to be invested to grow to 5404.80 in 19 years? % (Round to the nearest whole percent.) d. At what annual rate would $216 have to be invested to grow to $272.70 in 4 years? 0% (Round to the nearest whole percent.) Enter your answer in each of the answer boxes