On the following graph, use the purple rectangle (diamond symbols) to shade the area representing the revenue lost from the initial four engines by selling at $90,000 rather than $105,000. Then use the green rectangle (triangle symbols) to shade the area representing the revenue gained from selling an additional engine at $90,000. 150 135 Revenue Lost 120 Demand 105 90 Revenue Gained 75 PRICE (Thousands of dollars per fire engine ) 60 45 30 15 0 2 3 4 5 6 8 9 10 QUANTITY (Fire engines) Rajiv's Fire Engines increase production from four to five fire engines because the change in dominates in this scenario