The document describes the linear programming model and the simplex method for solving linear programming problems. The linear programming model involves defining decision variables, an objective function to maximize, and constraints on the variables. The simplex method is then used to iteratively find the optimal solution. It involves setting up an initial tableau, identifying entering and leaving variables, performing row operations to create new tableaus, and checking for optimality until reached. As an example, the document formulates a linear programming model to maximize profits for a company producing two products subject to resource constraints. It then applies the simplex method through multiple iterations to arrive at the optimal solution of 270 units of product 1 and 75 units of product 2 for maximum profits