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. 0 5 10 15 20 25 30 35 40 45 50 100 90 80 70 60 50 40 30 20 10 0 PRICE (Dollars per unit) QUANTITY (Units) Demand Graph Input Tool Market for Goods Quantity Demanded (Units) 25 Demand Price (Dollars per unit) 50.00 On the previous graph, change the number found in the Quantity Demanded field to determine the prices that correspond to the production of 0, 10, 20, 25, 30, 40, or 50 units of output. Calculate the total revenue for each of these production levels. Then, on the following graph, use the green points (triangle symbol) to plot the results. Total Revenue 0 5 10 15 20 25 30 35 40 45 50 1250 1125 1000 875 750 625 500 375 250 125 0 TOTAL REVENUE (Dollars) QUANTITY (Number of units) Calculate the total revenue if the firm produces 10 versus 9 units. Then, calculate the marginal revenue of the 10th unit produced. The marginal revenue of the 10th unit produced is $ . Calculate the total revenue if the firm produces 20 versus 19 units. Then, calculate the marginal revenue of the 20th unit produced. The marginal revenue of the 20th unit produced is $ . Based on your answers from the previous question, and assuming that the marginal revenue curve is a straight line, use the black line (plus symbol) to plot the firm's marginal revenue curve on the following graph. (Round all values to the nearest increment of 20.) Marginal Revenue 0 5 10 15 20 25 30 35 40 45 50 100 80 60 40 20 0 -20 MARGINAL REVENUE (Dollars) QUANTITY (Units) Comparing your total revenue graph to your marginal revenue graph, you can see that total revenue is at the output at which marginal revenue is equal to zero.