1. The data for the demand for oil indicates that at a price of $50, buyers would be willing to buy million barrels of oil per day. All else equal, if the price of oil increase to $100, buyers would be willing to buy million barrels of oil. Such a change represents a decrease in . Other things constant, if the price of oil decreased to $25, buyers would be willing to buy million barrels. Such a change would be called an increase in