in the demand for good B. 9. The demand for this type of good rises when income falls and falls when income rises. 10. Thinking about the future price of a good that can influence your demand for that good today. Analyze and Explain: In the following situations, identify if the demand or the quantity demanded changes. Explain the reason for the change. DEMAND OR QUANTITY DEMANDED? EXPLANATION 1. Holly gets a raise at work and decides that she will buy more music downloads. 2. David notices that the price of coffee has increased, so he buys less coffee. 3. George decides not to buy new tires now since he expects tire prices to fall next month. 4. Eric notices that the price of Coke is higher and as a result buys more Pepsi. 5. As the population ages, more people buy hearing aids. 6. James decides to buy more peanut butter as a result of jelly going on sale. 7. Madeline does not need to buy diapers anymore for her three-year-old son