Take the total of the discounted expenses you found in C1 as your future value or nest egg at retirement and create a sinking fund for yourself with monthly payments or a monthly investment at the end of each month in order for your to meet the sinking fund goal at retirement. Assume a weighted average nominal rate of 12% compounded monthly from now until retirement (Assumes you are 100% in Stock). Find the monthly investment at the end of each month required for the following years you may be employed before retiring using the formula for sinking fund for the following periods (illustrate your formula or calculator use) a. 50 - years until retirement or 600 months. b. 40 - years until retirement or 480 months. c. 30 - years until retirement or 360 months. d. 20 - years until retirement or 240 months