10 girls go to see a chick flick together on a Friday night at their local megaplex. They buy x large popcorns and y large fountain drinks. Together they spend $85 on snacks. They walk into an empty theater that has been recently cleaned. They have the theater to themselves. When they leave, there are 14 things in the garbage. How many large popcorns and how many large fountain drinks did they drink? Write a system of equations. Solve using either linear combination or substitution. Show all work.