Does someone know what the answer in this question? Need some help :((

7-1 Explain what the constraints represent, and why they have to be carefully considered when determining the objective function in an LP problem. 7-2 List all the assumptions required for formulating a linear programming problem. You should be able to mention and synthetically describe at least seven of them. 7-3 Among the assumptions for the formulation of an LP problem, there is linearity. What does it mean in practice, and why it is important? 7-4 You have just formulated a maximization LP problem and are preparing to solve it graphically. What criteria should you consider in deciding whether it would be easier to solve the problem by the corner point method or the isoprofit line approach? 7-5 One of the basic assumptions of linear programming is proportionality. Explain why it is needed. 7-6 Suppose a linear programming (maximization) problem has been solved and the optimal value of the objective function is $300. Now assume that a constraint is removed from this problem. Explain how this might affect each of the following: (a) the feasible region (b) the optimal value of the objective function