please show work and please answer both questions

2. Oranges are grown, picked, and then stored in warehouses in Tampa, Miami, and Fresno. These warehouses supply oranges to markets in New York, Philadelphia, Chicago, and Boston. The following table shows the shipping costs per truckload in hundreds of dollars), supply, and demand. Because of an agreement between distributors, shipments are prohibited from Miami to Chicago: To (cost, In $100s) From New York Philadelphia Chicago Boston Supply Tampa $ 9 $ 14 $.12 $ 17 200 Miami 11 10 6 10 200 Fresno 12 8 15 200 Demand 130 170 100 150 Formulate this problom as a linear programming model and solve it by using the computer, 3. Construct a Gantt chart for the following set of activities and indicate the project completion time and slack for each activity: Activity Activity Predecessor Time (weeks) 1 3 3 2 7 3 1 N 4 2 5 5 2. 6 B 4 6 4 Ch.8 Q4: Identify all the paths in the following network, compute the length of each, and indicate the critical path (activity times are in weeks): 8 10 5 4