I can't seem to manage to understand what these problems are asking for. I have to do 8 and 9, and am having a lot of trouble seeing what I am supposed to do. I've been looking at 8 a and 8c, but I still am not understanding how to do the rest. Any help would be greatly appreciated. I think I understand the concept of a family of sets, but I can't seem to get started on either of these problems.