3. (5 points) Suppose that you are a manager. You are considering whether or not to monitor employees with the payoffs in the normal-form game shown below. Worker Work Shirk Monitor -1, 1 1, -1 Manager Don't Monitor 1, -1 -1, 1 Is there a Nash equilibrium for the above one-shot simultaneous move game? Please explain. 4. (5 points) The following depicts a normal-form game of price competition. Firm B Low Price High Price Low Price 0, 0 25, -5 Firm A High Price -5, 25 10, 10 What interest rate would be effective at ensuring that a trigger strategy would maintain collusion? Please explain and show all calculations