I have a feeling these are not your questions, but rather homework questions -- just the way a few things are worded.  (After all these years, I know the difference between how a book talks and how your average student talks.)  If this is homework, then please see our guide for submitting such:
https://www.askmehelpdesk.com/financ...-b-u-font.html
Make an attempt to answer them and then someone will be more willing to help.
I'll tell you right now that I personally do not even know all of them because cost is a specialty, and it's not mine.  (Especially given this is more advanced cost.)  I'd have to research them, meaning you should take the time first yourself to research them.