You invested 1,000 in Account A exactly two years ago, which pays simple interest at an annual rate of 6.5%. Today you withdraw all the money in Account A and invest them in Account B. Account B pays at a simple rate of discount of d per year. You expect that your account value will grow to 1,738.46 in five years. (a) Determine d. (b)What is the effective annual rate of interest in the entire seven-year period?