Suppose that the European Central Bank conducts a main refinancing sale. Everything else held constant, this would cause the demand for U.S. assets to ________ and the U.S. dollar will ________

A firm's average variable cost is $90, its total fixed cost is $10,000, and its output is 1,000 units. Its total cost is

A) less than $85,000. B) between $85,000 and $95,000. C) between $95,000 and $105,000. D) more than $105,000.

Assume a perfectly competitive firm's short-run cost is TC = 100 + 160Q + 3Q2. If the market price is $196, what should it do?

A) produce 5 units and continue operating B) produce 6 units and continue operating C) produce zero units (i.e., shut down) D) Cannot be determined from the above information