Consider a perfectly competitive market described by the supply function p = 20 + 0.1q and demand function p = 80 - 0.3q. if the market is in equilibrium, then an individual firms total revenue (tr), average revenue (ar) and marginal revenue (mr) functions are:

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.

disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.