$\displaystyle-{5.2}\usepackage{cmbright}\Huge\$ is to the left of $\displaystyle-{2.9}\usepackage{cmbright}\Huge\$ on a number line, so $\displaystyle-{5.2}<-{2.9}\usepackage{cmbright}\Huge\$ . However, $\displaystyle-{7.3}\usepackage{cmbright}\Huge\$ is to the left of 1.2 on a number line, so $\displaystyle-{7.3}<{1.2}\usepackage{cmbright}\Huge\$ . The correct answer is C and D.