Correct. Separate the countertop into a trapezoid and a rectangle.

Area of the trapezoid: $\displaystyle{A}={\left(\frac{{{2}+{5}}}{{2}}\right)}\cdot{3}={10.5}\usepackage{cmbright}\Huge\$

Area of the rectangle: $\displaystyle{A}={7}\cdot{3}={21}\usepackage{cmbright}\Huge\$

The area of the entire countertop is: $\displaystyle{A}={10.5}+{21}={31.5}\usepackage{cmbright}\Huge\$

Multiply the area by 4 to find the cost of the granite: $\displaystyle{31.5}\cdot{4}={126}\usepackage{cmbright}\Huge\$ dollars