Correct. Solve each inequality for z. The solution is $\displaystyle{z}\ge{0}\usepackage{cmbright}\Huge\$ and $\displaystyle{z}\ge{3}\usepackage{cmbright}\Huge\$ . The graph of the solution is the overlap of the graphs of these two inequalities. This is the set of points where $\displaystyle{z}\ge{3}\usepackage{cmbright}\Huge\$ .