So the question is: a business has $15,000 to spend on airline tickets to travel to a conference. it wants 27 of its employees to attend. the business wants to buy as many business-class seats as possible. the business-class seats cost $700. the economy-class seats cost $375. now, i need setting up both of the equations! i had an idea of how it should go, but when i attempted to solve it, it didn't make much sense. you!