The project manager of a task force planning the construction of a domed stadium had hoped to be able to complete construction prior to the start of the next college football season. After reviewing construction time estimates, it now appears that a certain amount of crashing will be needed to ensure project completion before the season opener. Given the following time and cost estimates, determine a minimum-cost-crashing schedule that will shave three weeks off the project length. Which tasks will be shortened by how much time, and what will be the total cost of the crashed project? [6 marks]