First of all, volume can't be negative so A and B are out.
let R be the region in the first quadrant between the graphs of , and the y-axis. The volume of the solid that results when R is revolved about the x-axis is
(A) -0.888
(B) -0.869
(C) 0.277
(D) 0.869
(E) 0.888
first thing i did was graph it on calculator then find where the graphs intersect but i forgot what to do from there