(Compound value solving for n) How many years will the following take? a. $520 to grow to $1,129.38 if invested at 9 percent compounded annually b. $38 to grow to $65.29 if invested at 7 percent compounded annually c. $120 to grow to $520.14 if invested at 13 percent compounded annually d. $55 to grow to $69.44 if invested at 6 percent compounded annually a. How many years will it take for $520 to grow to $1,129.38 if invested at 9 percent compounded annually? years (Round to the nearest whole number.) b. How many years will it take for $38 to grow to $65.29 if invested at 7 percent compounded annually? years (Round to the nearest whole number.) c.How many years will it take for $120 to grow to $520.14 if invested at 13 percent compounded annually? years (Round to the nearest whole number.)