7. Is the game shown in Figure 13-3 a zero-sum game or 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 favourable cell than the Nash equilibrium in this single-period pricing game. [LO13.6]