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Mathematics 7 Online
OpenStudy (anonymous):

21. According to the graph above, between which two consecutive years was there the greatest change in the price of coffee? (A) 1981 -1982 (B) 1982 - 1983 (C) 1983 - 1984 (D) 1984 -1985 (E) 1985 - 1986

OpenStudy (anonymous):

look at question 21

OpenStudy (shane_b):

What part of this is confusing you? The graph shows you the prices for each year. All you need to do is determine the difference between the prices each year and see which one has the largest difference.

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