Pulling out my hair over my homework...

Ok, I was an idiot. I took at least two classes that I knew would be hard and I'm also taking sixteen credits total. I'm sitting here trying to do my homework for corporate finance and I can't figure out what formula I'm supposed to use to arrive at the answer. The instructor told us on the first day that since there is a take home test we should have our friends who work on Wall street do the take home portion for us and teach it to us so we know how to do it for the in class exam.  So, do I have any readers who are in finance that maybe can help me? I'm pulling out my hair, here.