Participate in a discussion with your classmates by describing the effects of the demand and supply model. Review the "EYE on Your Life" caption titled, Understanding and Using Demand and Supply, within Section 4.2 in the textbook. You will use this model again and again during our course, so having a clear understanding of it will bring you an immediate payoff. But much more important, by understanding and using the demand and supply model, you'll have a much better appreciation of how our economic world works. Therefore, share with your classmates how demand and supply influence the prices of your favorite clothing, music, and food items.