Solve the problem.The bar graph below shows a company's yearly profits from 1991 to 1999. Let an represent the company's profit, in millions, in year n, where n=1 corresponds to 1991, n = 2 corresponds to 1992, and so on. Find 

A. $631 million
B. $650.8 million
C. $140.1 million
D. $593.4 million


Answer: A

Mathematics

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Match the surface show below to the graph of its level curves.

A.

B.

C.

D.

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