please help me solve 1-5

Pets-R-Us operates two factories to produce dog food and they operate three distribution centers (RCS) to hold inventory and deliver to stores each month. Demand is aggregated at the RCS and managed by the DCs. The following transportation costs have been determined through a recent study of the company's operations: TRANSPORTATION COST (\$) PER 25 POUND BAG Each factory can supply 3000 bags per month. The distribution centers have different demand levels as follows: DC-A needs 1500 bags per month, DC-B needs 2000 bags per month, DC-C needs 2500 bags per month. The objective is to choose the quantities to ship from the factories to the distribution centers that will minimize total transportation cost. Formulate this problem as a Transportation model by answering the following questions: 1. Develop the table for the Decision Variables. 2. Define the Objective Function 3. Define the supply constraints 4. Define the demand constraints 5. List any other constraint(s) that apply to the Decision Variables