I need the 3rd question to be solved I did 2nd already thanks

2) Energex has four electric power plants that supply the needs of three cities. Each power plant can supply the following numbers of kilowatt-hours (kwh) of electricity: plant 1 45 million; plant 265 million; plant 380 million; plant 490 million. The peak power demands in these cities, which occur at the same time (8 P.M.), are as follows (in kwh): Ankara95 million; Bursa80 million; Manisa60 million. The costs of sending 1 million kwh of electricity from each plant to each city are given in the table below. Formulate a linear programming model to minimize the cost of meeting each city's peak power demand. Define the decision variables, state the objective function, and specify all the constraints. Ankara Bursa 7 TL From To Plant 1 Plant 2 Plant 3 Plant 4 11 TL 10 TL 5 TL 8 TL 7 TL Manisa 6 TL 8 TL 8 TL 10 TL 9 TL 6 TL 3) A company wishes to plan its production of two items with seasonal demands over a 12-month period. The monthly demand of item1 is 100 units during the months of October, November and December; 10 units during the months of January, February, March and April; and 30 units during the remaining months. The demand of item2 is 50 units during the months of September through December and 15 units during the remaining months. Suppose that the unit product cost of item1 and item2 is 5000 TL and 8000 TL, respectively, if they are manufactured before June. After June, the unit costs are reduced to 4500 TL and 7000 TL because of the installation of an improved manufacturing system. Item1 requires 1 unit of a key component and item2 requires 2 units. The availability of this key component is 120 units per month during January- September and 150 units per month during October-December. Furthermore, each unit of item1 occupies 2 m' and each item2 occupies 4 m? of inventory. Suppose that the maximum inventory space allocated to these items is 200 m' and that the holding cost during any month is 100 TL/m. Formulate a linear programming model which will represent this system. Define the decision variables, state the objective function, and specify all the constraints