Suppose the figure to the right illustrates the monthly demand for imported rugs at a local rug gallery. Suppose the price of rugs increases from $7,000 to $7,500. Total revenue before the price change is $ (Enter your response as an integer.) Rent (dollars per month) O 10,000 9,000- 0 8,000 B G 7,000 6,000- 5,000- 4,000 3,000 Demand 2,000- 1,000 10 20 30 140 50 60 TO 80 Quantity 90 100