A firm produces and sells two goods, A and B. Good A is known to have many close substitutes; good B makes up a significant portion of most families' budgets. A price increase for each good would most likely cause total revenues for good A to:

Economic models like the AD-AS model tell us:

A. how to determine which economic variables are changing. B. what to expect if we know what is happening. C. exactly what is happening. D. nothing useful about the real world.

Under the bimetallic standard of the 19th century:

a. the amount of money in circulation increased. b. the American dollar served poorly as a unit of account. c. only one metal tended to circulate as money at any given time. d. the government earned profits by selling gold.