WeBWorK Standalone Renderer

The figure below shows contours of $g(x,y)$ on the region $R$ , with $3 \le x\le 9$ and $4 \le y\le 10$ .

contour graph showing the contours of the function.

Using $\Delta x = \Delta y =2$ , find an overestimate and an underestimate for $\int_R g(x,y)\, dA$ .

Overestimate =
Underestimate =

You can earn partial credit on this problem.