A bookstore costs $125 a day to keep open, and spends $16 for each book it
sells. The store charges $22 for each book it sells. If n represents the number
of books sold, which equation represents the revenue function for this
bookstore?
22(n)-16(n)-125(times the days open)=revenue. This is because you are getting the books cheaper than you are selling them for therefore your price of a book that you pay for times the number of books will give you the idea of how much you are spending then take your price and times it by the amount of books, subtract your inital amt you pay for them and then also subtract the number of days times 125$ to get how much you pay for rent. The end result will be your revenue
