Inbee likes to play golf. The number of times per year that she plays depends on the price of playing a round of golf, her income, and the price of other types of entertainmentin particular, the price of going to a movie instead of playing golf. The three demand schedules in the table below show how many rounds of golf per year Inbee will demand at each price under three different scenarios. In scenario D1, Inbee's income is $50,000 per year and movies cost $9 each. In scenario D2, Inbee's income is also $50,000 per year, but the price of seeing a movie rises to $11. And in scenario D3, Inbee's income goes up to $70,000 per year, while movies cost $11