Unit 3A: Exercise 3-3 Graphing Changes to Demand

Wow, this one sure took some thought. I originally was looking to see how physical CD sales were comparing to digital sales from ITunes. However, ther ewas not sufficient data available to obtain figures for plotting. I therefore elected to plot individual itunes sales againt the supply that itunes would provide. However, this is actually a futile exercise due to the fact that the digital supply from itunes is infinite.