Macroeconomics 9th Edition by David Colander

Exercise 32

Suppose the demand and supply for milk are described by the following equations: Q D = 600 - 100 P ; Q s = - 150+ 150 P , where P is price in dollars, Q D is quantity demanded in millions of gallons per year.nd Q s is quantity supplied in millions of gallons per year.
a. Create demand and supply tables corresponding to these equations.
b. Graph supply and demand and determine equilibrium price and quantity.
c. Confirm your answer to b by solving the equations mathematically.