Remember that $\displaystyle{8.6}={8.60}\usepackage{cmbright}\Huge\$ . Now compare the digits of $\displaystyle{8.60}\usepackage{cmbright}\Huge\$ and $\displaystyle{8.54}\usepackage{cmbright}\Huge\$ . The digits in the ones place are the same. Comparing the tenths place, $\displaystyle{6}>{5}\usepackage{cmbright}\Huge\$ , so $\displaystyle{8.60}>{8.54}\usepackage{cmbright}\Huge\$ . The correct answer is $\displaystyle{8.81}>{8.8}\usepackage{cmbright}\Huge\$ .