(Compound value solving for n) How many years will the following take? a. $520 to grow to $1,231.03 if invested at 9 percent compounded annually b. $42 to grow to $71.98 if invested at 8 percent compounded annually c. $120 to grow to $417.43 if invested at 12 percent compounded annually d. $54 to grow to $68.92 if invested at 5 percent compounded annually a. How many years will it take for $520 to grow to $1,231.03 if invested at 9 percent compounded annually? years (Round to the nearest whole number.) b. How many years will it take for $42 to grow to $71.98 if invested at 8 percent compounded annually? years (Round to the nearest whole number.) c. How many years will it take for $120 to grow to $417.43 if invested at 12 percent compounded annually? years (Round to the nearest whole number.) d. How many years will it take for $54 to grow to $68.92 if invested at 5 percent compounded annually? Nyears (Round to the nearest whole number.) Enter your answer in each of the answer boxes