Final answer:
In economics, factors such as the price of complementary goods and expectations about future prices can both increase and decrease demand depending on the type of good.
Step-by-step explanation:
In economics, many factors can both increase and decrease demand depending on the type of good. One factor that can influence demand is the price of complementary goods. Complementary goods are goods that are often used together, such as breakfast cereal and milk. If the price of one complementary good, like golf clubs, rises, the demand for the other complementary good, like golf balls, decreases. Another factor that can affect demand is expectations about future prices. If people expect the price of a certain good, like coffee, to rise in the future, they may increase their demand for it now.