6. 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: From New York Boston Supply 200 Tampa Miami Fresno Demand $ 9 11 12 To (cost, in $100s) Philadelphia Chicago $ 14 $ 12 10 6 8 15 170 100 $ 17 10 200 7 150 130