4. Graph the system of inequalities ( 25 points : 5 points for each inequality ) 100 70- 60- 30- 20 15- 45 60 40 20 3 35 20 5. Find the vertices of the region that contains the solutions to the system of linear inequalities ( 10 points : 2 points for each vertex ) 6. Test the coordinates of each vertex in the objective function to find the one that gives the maximum profit (15 points : 3 points for testing each vertex ) 7. State the solution in terms of the variables ( 10 points )