what excel formula should i use for the following problem??Anna's daughter will be attending college in 7 years. Assume current tuition and fees are $50,897, and inflation for college costs averages 6.9 percent, and Anna can earn 3.4 percent on the money she invests for this purpose. Anna wants to know how much she will need to set aside today to pay four years of tuition and fees.what excel formula should i use for the second part of following problem?? explain in great detail