The inequalities are .

Graph the all of five constraints.

Draw the coordinate plane.

The inequality.

Graph the line .

Since the inequality symbol is the boundary is included the solution set.

Graph the boundary of the inequality with solid line.

To determine which half plane to be shaded use a test point in either half- plane.

A simple choice is .

Substitute in original inequality.

.

The statement is false.

Since the statement is false, shade the region does not contain point .

Similarly graph the other inequalities.

The inequality.

Test point is .

.

Since the statement is true, shade the region contain the point .

The inequality .

Test point

.

Since the statement is true, shade the region contain point .

Graph:

Graph :

The feasible area looks like in the graph as

Observe the graph the corner points are , ,, and .

The function is .

Point	\ Function \	\ Value \
	\ \	\ \
\ \	\ \	\ \
\ \	\ \	\ \
	\ \	\ \
	\ \	\ (maximum) \

The maximum value of is and it occurs at .

The maximum value of is and it occurs at .