The continuous compound interest formula is given by A = Pe" where A is the accumulated amount, after an initial investment of P dollars is invested for t years, at annual interest rate r, compounded continuously. Use the formula above to determine how long it will take an initial investment of $6,500 to increase by 35%, if the account earns 6.89% interest per year, compounded continuously. Round the solution to two decimal places. The account balance will increase by 35% after years.

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