1. As the annual per capita income increased from $38,000 to $38,390, annual per capita consumption of movie tickets in the United States increased from 30 units to 42 units
2. Calculate the income elasticity of demand for movie tickets. (Points: 5)
   1. Provide the correct formula
   2. Show the procedure
   3. State the correct answer, including correct sign and magnitude
3. Interpret your elasticity value. (Points: 5)
4. Are movie tickets an income normal good or income inferior good? (Points: 4)