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The demand curve for each seller’s product in perfect competition is horizontal at the market price because

Which of the following does not hold true for a perfectly competitive firm in long-run equilibrium? 

An example of a barrier to entry is

What is the area that represents the total revenue made by the firm?

Assume that price is greater than average variable cost. If a perfectly competitive seller is producing at an output where price is $11 and the marginal cost is $14.54, then to maximize profits the firm should

EXTRA CREDIT Consider a typical firm in a perfectly competitive industry that makes short-run profits. Which of the diagrams in the figure shows the effect on the industry as it transitions to a long-run equilibrium?

In the long run which of the following is true? 

The figure above shows cost and demand curves for a monopolistically competitive producer of iced tea. What is the profit-maximizing output level? What is the profit-maximizing price? At the profit-maximizing output level, how much profit will be realized? Does this graph most likely represent the long run or the short run? Why?

Which of the following variables will not cause the market supply curve of labor to shift?

Given the electronegativities below, which of the following covalent single bonds is the most polar? Element: H C N O Electronegativity 2.1 2.5 3.0 3.5