Final answer:
The shape of the feasible region is a quadrilateral and the vertices are (0,9), (0,73), (9,0), and (23,50).
Step-by-step explanation:
The given system of inequalities represents a quadrilateral feasible region. To determine the shape of the feasible region, we graph each inequality and shade the region that satisfies all the given inequalities. The vertices of the feasible region can be found at the intersection points of the boundary lines. The vertices of the feasible region are (0,9), (0,73), (9,0), and (23,50).