Is the game shown by Figure in the chapter (not this appendix) a zero-sum game or is

Question:

Is the game shown by Figure in the chapter (not this appendix) a zero-sum game or is it a positive-sum game?

How can you tell? Are there dominant strategies in this game? If so, what are they? What cell represents a Nash equilibrium and why? Explain why it is so difficult for Uptown and RareAir to achieve and maintain a more favorable cell than the Nash equilibrium in this single-period pricing game.