MS electronics supply highly complex components for military communications systems. Four products, named the MX range, share the labor hours available for each of the four production processes: wiring, drilling, assembly and finishing. For each product and each process, the hours of labor required for each unit of production and the total hours available per month are shown in the table below. The table also shows the profit earned per unit for each product and the minimum monthly demand for that product.

Q$\mathrm{.}1$ Create a graph showing feasible region