please give step by step answer. thank you!

2. Craig's Bike Shop is behind on a custom bike and needs to crash 6 hours of time from the 8-step project. Given the project table below calculate the crash cost for 6 hours of time-savings. Suppose Craig calls the customer and asks for a project extension, reducing the amount of time he needs to crash. Calculate both the maximum time-savings available on a $20 crash budget and the cost to crash five hours of savings. (15)