Use the model A = Pe ?? or A= P(1+r)?? where A is the future value of P dollars invested at interest rate compounded continuously or n times per year for 7 years. If a couple has $200,000 in a retirement account, how long will it take the money to grow to $1,000,000 if it grows by 5.5% compounded continuously? Round up to the nearest year. It will take approximately years..