You are the manager of a pizzeria that produces at a marginal cost of $6 per pizza. The pizzeria is a local monopoly near campus (there are no other restaurants or food stores within 500 miles). During the day, only students eat at your restaurant. In the evening, while students are studying, 3 faculty members eat there. If students have an elasticity of demand for pizzas of -4 and the faculty has an elasticity of demand of -2, what should your pricing policy be to maximize profits?