How do I set the free-market and Cartel points on this graph. I'm confused as to where they should be.

Suppose that OPEC does not exist and that the 12 oil-producing nations compete in the world market, which is perfectly competitiv On the following graph, use the black point (plus symbol) to indicate the industry's free market profit-maximizing output. Note: Dashed drop lines will automatically extend to both axes. 100 90 MC 80 Free Market 70 PRICE (Dollars) BO Cartel 40 30 20 MR Demand 10 600 1080 1500 2000 2500 3060 8500 4000 4500 5000 OIL (Barrels per day) Next, suppose that the oil suppliers form a cartel. On the previous graph, use the grey point ( star symbol) to indicate the profit-maximizing price and total quantity produced by all cartel