When sold for , Ferraris have an annual supply of vehicles and an annual demand of vehicles. When their price increases to , the annual supply increases to , and the demand decreases to billion gallons.

(a) Assuming that the supply and demand equations are linear, find the supply and demand equations.

Supply Equation
Demand Equation

(Note: The equations should be in the form where denotes the price (in dollars) and denotes the quantity. The slope and -intercept should be accurate to two decimal places).

(b) Find the Equilibrium price and quantity.

Equilibrium price
Equilibrium quantity

(Note: The equilibrium price and quantity should be accurate to two decimal places, and the equilibrium price should include a dollar sign).

You can earn partial credit on this problem.