7. An electronics firm manufactures printed circuit boards and specialized electronics devices. Final assembly operations are completed by a small group of trained workers who labor simultancously on the products. Because of limited space available in the plant, no more then ten assemblers can be employed. The standard operating budget in this functional department allows a maximum of $9000 per month as salaries for the workers. The existing wage structure in the community requires that workers with two or more years of experience receive $1000 per month, while recent trade-school graduates will work for only $800. Previous studies have shown that experienced assemblers produce $2000 in "value added" per month while new-hires add only $1800. In order to maximize the value added by the group, how many persons from each group should be employed? Solve graphically and by the simplex method