answering all answers according to the solutions.

2) The National Oceanic Research Institute is planning a research study on global warming in Antarctica. Task information is given below, followed by the expense schedule for each task. a) Draw a project network, determine critical path(s), and calculate the expected completion time of this project. b) Use Excel to prepare a time-phased budget for the project, making sure to show total expenses on each month of the project, as well as cumulative total by month. For noncritical tasks, also indicate their slack