Problem 4 Given an annual interest rate = 6%, calculate the effective interest rate for the number of compounding sub-periods shown below. Then calculate the future worth of the given present lump sum, using the effective interest rate and the given number of years (5 points). Calculate F using in and n = the number of years. Recalculate Fusing i= r/m, and n = the total number of sub periods. Show your work. # Sub-Periods Per Year le Present Sum # of years Future Worth 4 $80,000 20