Plz help me

Patterson's Metal Company manufactures two lines of designer yard gates, called model A and model B. Every gate requires blending a certain amount of steel and zinc; the company has available a total of 25,000 lb of steel and 6,000 lb of zinc. Each model A gate requires a mixture of 125 lb of steel and 20 lb of zinc, and each yields a profit of $90. Each model B gate requires 100 lb of steel and 30 lb of zinc and can be sold for a profit of $70. Patterson's Metal Company can make no more than 150 model A gates. a) Use X, and X, to define the variables indicating which variable is X, and X, 2 Marks b) Derive the Objective Function in terms of X, and X 3 Marks c) Formulate the Constraints under which the company must operate 7 Marks d) Graphically illustrate the Feasible Region 4 Marks e) State the coordinates of the corner points e.g A(2,7), B(12,5) 8 Marks f) Determine the optimal solution 4 Marks g) Determine the profit at the optimal solution 2 Marks