4.7 is to the right of 3.4 on a number line, so $\displaystyle{4.7}>{3.4}\usepackage{cmbright}\Huge\$ . However, $\displaystyle-{2.7}\usepackage{cmbright}\Huge\$ is to the right of $\displaystyle-{4.6}\usepackage{cmbright}\Huge\$ on a number line so $\displaystyle-{2.7}>-{4.6}\usepackage{cmbright}\Huge\$ . The correct answer is C and D.