Over time, aggregate demand and aggregate supply grow by the same amount

An appreciation of the U.S. dollar has what impact on Harley-Davidson (HD), a U.S. manufacturer of motorcycles?

a. domestic sales of HD motorcycles increase and foreign sales of HD motorcycles increase b. domestic sales of HD motorcycles decrease and foreign sales of HD motorcycles increase c. domestic sales of HD motorcycles increase and foreign sales of HD motorcycles decrease d. domestic sales of HD motorcycles decrease and foreign sales of HD motorcycles decrease e. only manufacturers who produce traded goods are affected

Economies of scale exist when the long-run average-total-cost curve is positively sloped

a. True b. False Indicate whether the statement is true or false