AA Appliances sells refrigerators. In 2015 it added $100,000 to its inventory. $10,000 of this addition was from used refrigerators, and the remaining $90,000 was from their purchases of newly manufactured refrigerators. How much of AA's inventory is included in 2015 GDP?

Fill in the blank: When a chooser asks herself "Is it worth it?," she is trying to evaluate the ________ of a particular project or plan of action

A) technical efficiency B) objective efficiency C) economic efficiency D) engineering efficiency

If average cost is positive

A) marginal cost equals average cost. B) marginal cost exceeds average cost. C) marginal cost is less average cost. D) Not enough information is given.