There is a hamburger stand located in Providence, RI, which is a perfectly competitive market for hamburgers. If the hamburger stand produces hamburgers, they will sell 300 hamburgers in one day. Their average fixed cost is $10, their total variable costs are $600, and the price of a hamburger is $3. In the short run should this firm produce or shutdown? Should they exit the market in the long-run? If there are 100 hamburger stands in the market, what is the quantity supplied in the market at a price of $3 per burger?