2. Calculating marginal revenue from a linear demand curve The blue curve on the following graph represents the demand curve facing a firm that can set its own prices. Use the graph input tool to help you answer the following questions. You will not be graded on any changes you make to this graph. Note: Once you enter a value in a white field, the graph and any corresponding amounts in each grey field will change accordingly. Graph Input Tool ? 100 Market for Goods I Quantity 25 Demanded (Units) 70 Demand Price 50.00 (Dollars per unit) PRICE (Dollars per unit) 40 20 Demand 20 10 5 10 15 20 25 30 35 40 45 50 QUANTITY (Units)