In the following cases, using a supply and demand diagram, explain what happens to demand and how the change would be shown on a graph of the market. What has happened to equilibrium quantity and price?

1. Assuming that tickets to an NFL game are normal goods, what is the effect of an increase in the incomes of NFL fans?
2. Assuming that DIRECTV and Dish satellite are substitutes, what happens if the price of a DIRECTV subscription increases what happens in the market for Dish satellite?
3. Assuming that data plans and cell phones are complements, what happens in the cell phone market if the price of data plans decreases?

Upload a file that answers all three parts-- you should have 3 (completely labelled) graphs and an explanation for each.