The graph below shows the weekly market supply and market demand curves for lawnmowers. (D Market for Lawnmowers 1 000 900 800 700 s 600 500 400 300 200 100 Price (dollars per lawnmower) D \"W k) 0 10 20 30 40 50 60 70 80 90100110 Quantity (thousands of lawnmowers) Sergei is one of many lawnmower producers in a competitive market. His cost curves are shown in the graph below. Sergei's Costs 800 700 MC 600 ATC 500 Costs (dollars) 400 AVC 300 200 100 0 2 4 6 8 10 12 14 16 Quantity (lawnmowers)