An excellent overview of what a business model is, what different business models look like and how you build one is the book "Business Model Generation" by Alexander Osterwalder.
That being said, permit me some very blunt advice (I am German, after all):
If you were on my team, I'd probably rip your head off for such a question. Maybe not the first time around, but definitely the second. Because it is just lazy and inconsiderate of other people's time to ask a question that Google can answer in a split second.
Whenever you come to someone - especially more senior people - with a question, make sure that you have done your homework and that asking this person is really the best and maybe the only way to find out the answer.