Taking the external costs of using refrigerators into account: 950- Spublic Spate 900 850- 800 750 700 650 E (45,000,650) 600- 550 10,000 30,000 50,000 70,000 Refrigerators Increases the equilibrium price and reduces the quantity demanded. Causes the supply curve to shift up and to the left. Increases the equilibrium price and quantity demanded. Causes the supply curve to shift down and to the right. Price ($) (40,000,700) E