Help me with this Macroeconomics Q

Market for Pizza 10. Calculate the amount of the shortage when the Price $15 S price is $8. $12 11. Calculate the amount of the surplus when the price is $11. $10 12. Identify a specific scenario that would cause the equilibrium price to be $12 and the equilibrium quantity to be 30 units. $8 13. Identify a specific scenario that would cause the equilibrium price to be $7 and the equilibrium $5 D quantity to be 20 units. 10 20 30 40 50 60 70 Quantity