At a price of $1.50 per bushel, the supply of wheat in Canada is 4 billion bushels and the demand 1s 1 billion bushels. When the price decreases to $1.40 per bushel, the supply decreases to 3.5 billion bushels and the demand increases to 1.5 billion bushels. Assume that both the supply and demand curves are linear. a What 15 the equation for the demand curve for wheat? b. What 1s the equation for the supply curve for wheat? C. Using these equations, what are the equilibrium price and the quantity of wheat