Answer:
An increase in the income of buyers in the market for Adirondack vacations would increase the demand for vacations. As a result there would be a rightward shift of the demand curve for Adirondack vacations.
b. As a result of the study, less people would be willing to eat pizza. As a result, there would be a leftward shift of the demand curve for pizza
c. If the price of electric cars increase, there would be an increase in the demand of gas powered cars. As a result, the demand curve for gas-powered cars would shift to the right
d. An increase in price of electric cars would lead to a reduction in the demand for electric cars. As a result, there would be a leftward shift of the demand curve for electric cars
Explanation:
Substitute goods are goods that can be used in place of another good. If the price of a good increases, the demand for the substitute good increases.