I need help with linear programming home work, I was struggling with understanding linear programing and case study project

Eagle Tavern Cost/Gallon Selling price profit Capacity Demand for Yodel Demand for Shotz Demand for Rainwater Yodel 1.5 3 Shotz 0.9 2.5 Rainwater 0.5 1.75 1 1 0 0 1 0 1 0 1 0 0 1 # of Gallons Yodel Decision Variables Objective Function # of Gallons Shotz # of Gallons Rainwater = = = spending Decision Variables Objective Maximize Votes 900000 900000 900000 900000 3000000 Job training Parks Sanitation Mobile library Comments Job training Parks Sanitation Mobile library Parks = Sanitation all four job catagories Anna Broderick Lunch Menu Calories Protein Carbohydrates (per lb.) Chicken Fish Ground beef Dried beans Lettuce Potatoes Milk (2%) Iron (mg/lb.) (g/lb.) (g/lb.) Fat (g/lb.) Chol-esterol Cost (mg/lb.) 4.2 3.1 0.25 3.2 0.4 2.25 0.2 17 85 82 10 6 10 16 0 0 0 30 0 70 22 30 5 75 3 0 0 10 180 90 350 0 0 0 20 = 1300 = 4 = 30 = 60 = 15 = = = = = = = = = = = = Minimum # of Nurses 30 20 40 50 60 80 80 70 70 60 50 50 Videotechnics Company (Multi Production and Inventory) Let Ri = Regular production in month I, where I = 1,2,3,4,5 Oi = Overtime production in month I, where I = 1,2,3,4,5 I_i = Inventory at end of month I, where I = 1,2,3,4 R1 R2 R3 R4 R5 = = = = = = = = = = = = = = =