Forecasting Commodity Prices Government economists in a certain country have determined that the demand equation for soybeans is given by p = f(x) = 51 2x² + 1 where the unit price p is expressed in dollars per bushel and x, the quantity demanded per year, is measured in billions of bushels. The economists are forecasting a harvest of 2 billion bushels for the year, with a possible error of 10% in their forecast. Use differentials to approximate the corresponding error in the predicted price per bushel of soybeans. (Round your answer to one decimal place.) dollars per bushel Need Help?