please help. double check work please these last couple answers have been wrong.

Canning Transport is to move goods from three factories to three distribution centers. Information about the move is given below. The shipping costs are given below. (Source B cannot ship to destination Z.) Give the network model for this problem. Give the network model for this problem. Give the linear programming model for this problem. (Let xy represent the flow from node i to node j where i and j are the node numbers.) s.t. Node 1 Flows Node 2 Fows Node 3 Hows Node 4 Flows Node 5 Flows Node 6 Flows Node 7 flown allxij0.