A manufacturer has two factories, located in Toronto and Winnipeg. Warehouses are located in Moncton, Montreal, and Calgary. Minimum requirements at the three warehouses are for at least 5000,8000 , and 7000 units, respectively. The production capacities of the two factories are 9000 and 11000 units, respectively. Shipping costs per unit from each factory to each warehouse are given below: The manufacturer wants to determine the optimal shipping schedule that will minimize transportation costs. Formulate the linear programming model for this