Piecewise Definitions of Functions

Shelby is planning to pick up carpet squares for her new room. At Home Depot, the cost $C$ (in dollars) of purchasing carpet squares, depending on the square feet $x$ of the carpet squares up to 100 square feet, is given by the function below. $$C(x)=\left\{\begin{matrix} 0.6x^2+0.5x+5 &\text{ if }& 0\leq x \leq 60\\ 0.4x^2+0.3x+7 &\text{ if }& 60 < x \leq 100 \\ \end{matrix}\right.$$ How much would Shelby have to pay if she wants to purchase $65$ square feet of carpet squares?