Problem statement Revelant equations None Attempt at a solution I know it is discontinuous if the right hand limit doesn't equals the left hand limit? Is that correct? The other criteria are If f(c) exists, lim f(x) x--> c exists and lim f(x)=f(c) I don't really understand what the other criteria mean? Also how will I tell from the piecewise function if it is removable? For the graph question number 24 I know the points of discontinuity are the open holes however how do I know if it's removable? Any help would be appreciated!!!