Will W Inc. makes two doors (A and B). The final product, in both instances, requires machining and painting. The company has loyal customers who order 220 units of product A. There are only 2,800 machine-hours available for making both products. Products A requires 2 hours per unit and product B requires 4 hours per unit at the machine stage. Similarly, there are 3000 person-hours available for painting the products. The number of person-hours required for painting products A and B are 2 and 3 respectively. Product A contributes $2.10 to the company's profits while product B contributes $3.20 to the company’s profits. 

Required:

State the objective function and the constraints related to the above conditions. 

Graph the constraints, determine the points that make the feasible region and the optimal number of A and B. Show all calculations.