Question 3 refers to the following. The Milton Lumber Company sells boards of various lengths (3-foot and 7-foot wood boards). This company's customers demand ten 3-foot boandts fifteen 7- foot per week. Milton Lumber cuts up boards 11 feet long to meet this demand and wants to determine how to atisfy its cutomen' nendi nith minimal waste. Assume that all boards share the same width and thickness. Formulate and solie an LP model, a. Define the decision variables, including the table. ( 6 points) b. Define the objective function (2 points) c. Define the constraints. ( 2 points).