Chapter 12 P1: Classic Corporation manufactures two models, small and large. The weekly time available for processing two models is 100 hours in machining and 120 hours in polishing. The contribution margin is $3 for the small model and $4 for the large model. Each model is processed as follows: Machining Polishing Smalhour 2 hours Large4 hours 3 hours Formulate the objective function and constraint equations necessary to solve for the optimum product mix