Question: (a) H. Schultz has estimated the demand for cotton in the US for the period 1915-1919 to be D(P ) = 6.4 - 0.3P (with appropriate units for the price P and the quantity D(P )). Find the demand in each case if the price is 8, 10, and 10.22.
(b) If the demand is 3.13, what is the price?