The statements and equations show various ways of defining average variable cost, marginal cost, and average total cost. tc is used to abbreviate total cost, vc is used to abbreviate variable cost, and q is used to abbreviate quantity. classify each statement or equation according to whether it describes average variable cost, marginal cost, or average (total) cost.

An office manager is concerned with declining productivity. despite the fact that she regularly monitors her clerical staff four times each day—at 9: 00 am, 11: 00 am, 1: 00 pm, and again at 3: 00 pm—office productivity has declined 30 percent since she assumed the helm one year ago. would you recommend that the office manager invest more time monitoring the productivity of her clerical staff? explain.

Andrea cujoli is a currency speculator who enjoys "betting" on changes in the foreign currency exchange market. currently the spot price for the japanese yen is ¥129.87/$ and the 6-month forward rate is ¥128.53/$. andrea would earn a higher rate of return by buying yen and a forward contract than if she had invested her money in 6-month us treasury securities at an annual rate of 2.50%. true/false?

Although appealing to more refined tastes, art as a collectible has not always performed so profitably. during 2003, an auction house sold a sculpture at auction for a price of $10,211,500. unfortunately for the previous owner, he had purchased it in 2000 at a price of $12,177,500. what was his annual rate of return on this sculpture? (a negative answer should be indicated by a minus sign. do not round intermediate calculations and enter your answer as