You may have made a mistake when solving the second inequality and incorrectly gotten $\displaystyle{j}<{10}\usepackage{cmbright}\Huge\$ . If that were correct, the overlap would be $\displaystyle{j}\le{6}\usepackage{cmbright}\Huge\$ . However, the solution is $\displaystyle{j}\le{6}\usepackage{cmbright}\Huge\$ and $\displaystyle{j}>{10}\usepackage{cmbright}\Huge\$ . Since the graphs of $\displaystyle{j}\le{6}\usepackage{cmbright}\Huge\$ and $\displaystyle{j}>{10}\usepackage{cmbright}\Huge\$ have no overlap, the correct answer is: There is no solution.