I'm not sure about the graph, but I solved them simultaneously? If you meant which graph but forgot to upload a photo attachment, look where it crosses the Y axis. If it is 4, it will be the first equation, if it crosses at -1, it will be the second equation
In order to solve this using V= B(h) (The B is area of the base) you need a radius it doesn't give us that but it does give us the circumference. C= 3.14(2r) 25.12=2r divide each by 2 12.56=r now use this in the volume formula: V= 12.56^2(3.14)(66) V=32,692.86 cubic inches
