Florida girl's death brings to light tonsillectomy risks. September 23, 2010|By Lorri Helfand and Letitia Stein, St. Petersburg Times. The recent death of a seemingly healthy, 12-year-old Pinellas County girl following a tonsillectomy may have many parents worried about one of the most common surgical procedures performed in children.
In a perfectly competitive market price is equal to marginal revenue. Price will also equal average cost. If price was greater than average cost the firms in the market would be making profit. This would lead to more firms entering (remember no barriers to entry) until profits are eliminated.
Each perfectly competitive firm is so small relative to the size of the market that it has no market control, it has no ability to control the price. In other words, it can sell any quantity of output it wants at the going market price. This translates into a horizontal or perfectly elastic demand curve.ach perfectly competitive firm is so small relative to the size of the market that it has no market control, it has no ability to control the price. In other words, it can sell any quantity of output it wants at the going market price. This translates into a horizontal or perfectly elastic demand curve.