The Jeans Store sells 7 pairs of jeans per day when it charges $100 per pair. It sells 8 pairs of jeans per day at a price of $90 per pair. The marginal revenue of the eighth pair of jeans is

A) $20.
B) $90.
C) $100.
D) $700.


Answer: A

Economics

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When the dollar appreciates, the cost to Americans of foreign goods

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Economics