After solving each inequality for a, you will find that the solution is $\displaystyle{a}>-{2}\usepackage{cmbright}\Huge\$ and $\displaystyle{a}<{1}\usepackage{cmbright}\Huge\$ . Since the word and joins the two inequalities, the solution is the overlap of the two solutions. That is, the solution is all the points in between $\displaystyle-{2}\usepackage{cmbright}\Huge\$ and 1.