Problem: Suppose the estimated supply function for avocados is given by Qs =58+15p-20pf, where pf is the price of fertilizer: The estimated demand for avocados is given by Qd=40p +20pt, where pt is thebprice of tomatoes per pound. Solve for the initial equilibrium price and quantity of avocados if the price of fertilizer, pf, is equal to .40 per pound, and price of tomatoes, pt, is .80 per pound.