I know you guys aren't fans of photos, but I was unsure of how to generate this graph online, especially without a function.

The question calls for using the graph to evaluate each integral:

a)$\displaystyle \int^2_0 g(x)dx $

b) $\displaystyle \int^6_2 g(x)dx$

c) $\displaystyle \int^7_0 g(x)dx$

For a) I did the following:

$\displaystyle A= \frac{1}{2} (b \ast h)= \frac{1}{2} (2 \ast 4)= 4$

For b)

$\displaystyle A= -\frac{1}{2} \pi r^2 = -\frac{1}{2}\pi (2)^2= -2\pi$

For c)

I need some help. Would I evaluate it at $\displaystyle \int^7_6$, and then add it to the integrals of a and b?