Identify which of the following would generate a decrease in the market demand for e-book readers, which are a normal good. Write your answer in the space below each change in the market. Write YES if you think that the change would decrease market demand for e-book readers; and write NO if you think that the change will not decrease market demand for e-book readers.

1- An increase in the price of downloadable apps utilized to enhance the e-book reading experience, which are complements.

2-An increase in the number of consumers in the market for e-book readers.

3-A decrease in the price of tablet devices, which are substitutes.

4- A reduction in the incomes of consumers of e-book readers.