1. The table shows the estimated profits y (in dollars) for a concert when the charge is x dollars per ticket. Write and evaluate a function to determine the maximum profit. Ticket price, x 0 3 9 12 15 Profit, y -10004100 7400 8900 8600 6500 Sol: 2. Explain when it is appropriate to use a quadratic model for a set of data. Sol: 3. Is it reasonable to use the model in Example 3 to predict the Rt- value after 2 years? Explain your reasoning. Sol: 4. The table shows the results of an experiment testing the maximum weights y (in tons) supported by ice x inches thick. Write a function that models the data. How much weight can be supported by ice that is 22 inches thick? 30 inches thick? Sol