Use Green's Theorem to evaluate the line integral. Assume the curve is oriented counterclockwise.\\
$\oint_C (8x + \ln 8y)dy - \left(3y^2 + \cos \frac{1}{x}\right)dx$, where C is the boundary of the square with vertices (0, 5), (3, 5), (3, 8), and (0, 8).\\
$\oint_C (8x + \ln 8y)dy - \left(3y^2 + \cos \frac{1}{x}\right)dx = $