Solve the following three problems using Excel. State clearly what each cell is, do not assume that someone reading your work will know. Use formulas that refer to cells so that if a value is changed then so should your answer be changed. The only items needed to be typed in Excel should be the values given in the problem and what any values an answers represent. Jack’s Party Company is planning to add a new party boat for the upcoming season. Jack has identified several activities that must be finished before the start of the season. Using the following information, a) Draw the network diagram for this project. b) Identify the critical path. c) Calculate the time required to complete this project.