Sandy's Socks makes the world's best socks. Sandy performed a least-squares regression of the information for the last eight months and obtained the following results. Number of Socks Produced 1,800 4,890 2,300 3,250 4,300 2,800 5,600 4,500 Total Cost 9,000 15,648 10,350 11,375 13,845 11,200 16,410 14.400 Month January March April May June July August Sandy performed a least-squares regression and obtained the following results. 5,514.22 1.97 X Variable 1 Suppose that Sandy's expects to sell 3,900 socks during the month of September and that each sock sells for $3.75 Complete Sandy's contribution margin income statement for the month of September. (Round your answers to 2 decimal places.)