At a price of $2.88 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 is 7,900 million bushels and the demand is 7,800 million bushels.

A. Find a price-supply equation of the form p=mx+b

B. Find a price -demand equation of the form p=mx+b

C. Find the equilibrium point

D. Graph the price-supply equation, price demand equation, and equillibrium point in the same cordinate system