Incorrect. Create a table of values for how high th water was at 0, 1, and 2 hours (e.g. when $\displaystyle{x}={0},{x}={1}\usepackage{cmbright}\Huge\$ , and $\displaystyle{x}={2}\usepackage{cmbright}\Huge\$ . Then find the difference in the water's height between each hour.