Incorrect. To convert the measurements, multiply the number of feet by $\displaystyle\frac{{{12}\ \text{ inches}}}{{{1}\ \text{ foot}}}\usepackage{cmbright}\Huge\$ and then add the number of inches. Or multiply the number of yards by $\displaystyle\frac{{{36}\ \text{ inches}}}{{{1}\ \text{ yard}}}\usepackage{cmbright}\Huge\$ to get the same answer.