What would not be held constant in testing a theory that if a student studies harder, he will get a better grade?
a. The course being taken

b. The ability and effort of the other students in the class.
c. The grading scale in the course.
d. The number of hours the student spends studying.

d

Economics

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If a firm happened to be the only seller of a particular product, it might behave as a price taker as long as

A) buyers have full information about the firm's price. B) the transaction costs of doing business with this firm are low. C) there are many buyers. D) there is free entry and exit.

Economics

In the 1980s, the U.S. had recessions in ________ and __________.

Fill in the blank(s) with the appropriate word(s).

Economics