and NO ONE can answer my question?
This forum has rules, that moderators are supposed to enforce. I'm not a moderator, so I take a more subtle approach, giving hints about the topic at hand, trying to draw out a question, that leads to the answer. So you'll learn what you need to know, and be better off when the exam comes.
I haven't been called 'nobody' before, on these forums. 'Though we do get our share of people who won't read their textbook, won't listen in class, won't apply general knowledge to specific examples, or ask pointed questions about a topic they're supposedly genuinely curious about.
In short, lots of people show up demanding complete answers so they have to do no work at all, and calling that behavior "getting help." You've made one "gimmie all the info" posting, and two "help help" posts. Do you actually consider that work?