Find the area of the region of the plane between the graphs of

$\displaystyle y=9-x^2$ and

$\displaystyle y=1+2x$

would $\displaystyle f(x)=9-x^2$

and $\displaystyle g(x)=1+2x$

and then set them equal? $\displaystyle 9-x^2=1+2x$

confused on how to do this problem