Solve the first inequality by dividing both sides by $\displaystyle-{4}\usepackage{cmbright}\Huge\$ to get $\displaystyle{t}\le-{2}\usepackage{cmbright}\Huge\$ . Solve the second inequality by subtracting 6 from both sides and then dividing by 2 to get $\displaystyle{t}\ge-{7}\usepackage{cmbright}\Huge\$ . The solution $\displaystyle{t}\le-{2}\usepackage{cmbright}\Huge\$ and $\displaystyle{t}\ge-{7}\usepackage{cmbright}\Huge\$ can be rewritten as $\displaystyle-{7}\le{t}\le-{2}\usepackage{cmbright}\Huge\$ .