Assuming no fixed costs are avoidable in the short run, a perfectly competitive firm's short-run supply curve is a. the portion of its average variable cost curve that lies below its average total cost curve. b. the portion of its average variable cost curve that lies above its average total cost curve. c. the portion of its marginal cost curve that lies above its average variable cost curve. d. the portion of its marginal cost curve that lies above its average total cost curve.

When interest is compounded continuously, the amount of money increases at a rate proportional to the amount s present at time t, that is, ds/dt = rs, where r is the annual rate of interest. (a) find the amount of money accrued at the end of 3 years when $4000 is deposited in a savings account drawing 5 3 4 % annual interest compounded continuously. (round your answer to the nearest cent.) $ (b) in how many years will the initial sum deposited have doubled? (round your answer to the nearest year.) years (c) use a calculator to compare the amount obtained in part (a) with the amount s = 4000 1 + 1 4 (0.0575) 3(4) that is accrued when interest is compounded quarterly. (round your answer to the nearest cent.) s = $

An essential element of being receptive to messages is to have an open mind true or false

Which of the following constitute the types of unemployment occurring at the natural rate of unemployment? a. frictional and cyclical unemployment. b. structural and frictional unemployment. c. cyclical and structural unemployment. d. frictional, structural, and cyclical unemployment.