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. PRICE (Dollars per uni 45 40 35 20 16 Demand 19 B 6 10 15 20 25 30 35 40 QUANTITY (Units) 45 50 Graph Input Tool Market for Goods Quantity Demanded (Units) 25 Demand Price: (Dollars per unit) 25.00)