please explain your soljtion. thanks

Question 3: Given the following information: 1 550 PERIOD 2 700 3 750 500 50 500 50 120 100 500 50 100 120 Demand Capacity Regular Overtime Subcontract Beginning inventory Costs Regular time Overtime Subcontract Inventory carrying cost Backorder cost $60 per unit $80 per unit $90 per unit $1 per unit per month $3 per unit per month Suppose that an increase in warehousing costs and other costs brings the Inventory carrying costs to $2 per unit per month. All other costs and quantities remain the same. Determine an input matrix of the transportation annotation table and the minimal total cost using the linear programming model. Question 3: Given the following information: 1 550 PERIOD 2 700 3 750 500 50 500 50 120 100 500 50 100 120 Demand Capacity Regular Overtime Subcontract Beginning inventory Costs Regular time Overtime Subcontract Inventory carrying cost Backorder cost $60 per unit $80 per unit $90 per unit $1 per unit per month $3 per unit per month Suppose that an increase in warehousing costs and other costs brings the Inventory carrying costs to $2 per unit per month. All other costs and quantities remain the same. Determine an input matrix of the transportation annotation table and the minimal total cost using the linear programming model