The table below shows the demand and total revenue for a monopolist. Fill in the "Marginal Revenue" column for the various prices and quantities. Instructions: Enter your answer as a whole number. If you are entering a negative number include a minus sign. Demand and Revenues Price Quantity Total Revenue Marginal Revenue (dollars) Demanded (dollars) (dollars) $240 40 $9, 600 215 60 12,900 190 80 15, 200 165 100 16,500 140 120 16, 800 115 140 16,100 90 160 14,400