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At a price of $2.28 per bushel, the supply of barley is 7, 500 million bushels and the demand is 7, 900 million bushels. At a price of $2.37 per bushel, the supply of barley is 7, 900 million bushels and the demand is 7, 800 million bushels. (A) Find a price-supply equation of the form 19 = mx + b. (B) Find a price-demand equation of the form 13 2 mac + b. (C) Find the equilibrium point