If, at the firm's projected sales level, the marginal cost is $40, the average cost is $50 and the markup is 30 percent, then its selling price is

Seller A has an upward-sloping supply curve and is willing to supply 400 units of a commodity at a price of $5 per unit. Seller A is now willing to supply 500 units at a price of $5 per unit. Evidently, seller A has experienced a(n):

A. increase in supply. B. decrease in supply. C. increase in quantity supplied. D. decrease in the quantity supplied.

According to the World Bank, almost 2 billion people are classified as being in severe poverty.

Answer the following statement true (T) or false (F)