Five friends all open investment accounts today. Which one will withdraw the largest amount of money from their account assuming that they each withdraw their funds at the end of their initial investment period? How many years will it take Prem to double his original investment? Show all your work including formulas, values used and, if using a financial calculator, function buttons with values and include all assumptions. Make a clear statement on which friend will have the largest amount at the end of the period and how many years for Prem to double his investment. John invests $1,000 for seven years at 6.2% simple interest. Prem invests $1,000 for four years at 9% with interest compounded annually. Alicia invests $800 for ten years at 12% with interest compounded annually. Kristi invests $1,200 for nine years at 8.25\% simple interest. Ivan invests $900 for nine years at 9% with interest compounded semi-annually