Answer
Part a)
Equilibrium price is 4
Part b)
Check graph in working
Equilibrium price = 4
Equilibrium quantity = 75 thousand
Part c)
At Price = 3.40, shortage of 13 thousand bushels
At Price = 4.90, Surplus of 21 thousand bushels
At Price = 60 cents higher than the equilibrium price, Surplus of 14 thousand bushels
At Price = 30 cents lower than the equilibrium price, shortage of 7 thousand bushels
Work Step by Step
Part a)
Shortage/Surplus = 0 at price = 4
Part b)
Plot the graph using the points given in the textbook, and the point where both the demand curve and the supply curve meets is the equilibrium price and quantity
Part c)
At Price = 3.40, 72 - 85 = -13
At Price = 4.90, 81-60 = 21
At Price = 4-0.3 = 3.70, 73-80 = -7
At Price = 4+0.6 = 4.60 = 79-65 = 14