pls help use excel

Complete this question by entering your answers in the tabs below. Complete the table below to calculate NPV. Assume Margaret's marginal tax rate over the life of the investment is 15 percent. Note: Cash outflows and negative amounts should be indicated by a minus sign. Round discount factor(s) to 3 decimal places, all other intermediate calculotions and final answers to the nearest whole dollar amount. Margaret Daniels has the opportunity to invest $595,000 in a new venture. The projected cash flows from the venture are as follows. Use Appendix A and Appendix B. Margaret uses a 7 percent discount rate. Required: a1. Complete the table below to calculate NPV. Assume Margaret's marginal tax rate over the life of the investment is 15 percent. a2. Should Margaret make the investment? b1. Complete the table below to calculate NPV. Assume Margaret's marginal tax rate over the life of the investment is 20 percent. b2. Should Margaret make the investment? c1. Complete the table below to calculate NPV. Assume Margaret's marginal tax rate in years 1 and 2 is 10 percent and in years 3 and 4 is 25 percent. c2. Should Morgaret make the investment? Complete this question by entering your answers in the tabs below. Complete the table below to calculate NPV. Assume Margaret's marginal tax rate over the life of the investment is 20 percent. Note: Cash outflows and negative amounts should be indicated by a minus sign. Round discount factor(s) to 3 decimal places, all other intermediate calculations and final answers to the rearest whole dollar amount. Complete the table below to calculate NPV. Assume Margaret's marginal tax rate in years 1 and 2 is 10 percent and in years 3 and 4 is 25 percent. Note: Cash outfiows and negative amounts should be indicated by a minus sign. Round discount factor(s) to 3 decimal places, all other intermediate calculations and final answers to the nearest whole dollar amount