The rst lady's opinion is valued and will cause a preference change. This preference change will shift the demand curve to the right. This decreases demand and decreases price. 3. You are a wheat farmer. Locusts attack your wheat. 4. Price of gasoline goes up. You own a gas station. 5. The price of corn goes up. You normally plant soybeans. 6. The price of peanut butter goes up. You sell jelly. 7. Your patent runs out on your popular and necessary drug. 8. Amazon has picked your small town to be their new worldwide headquarters. 9. The country is going into a recession. You sell jewelry. 10. The price of TVs just decreased by 20%. 11. Your product was declared one of "Oprah's Favorite Things." 12. You grow cotton and Eli Whitneyjust invented the cotton gin