Solve the problem.Junior high classes of 35 students each met in the cafeteria to take achievement tests. If exactly 5 students sat at each table and 28 tables were used, how many classes took the tests?

A. 17 classes
B. 7 classes
C. 4 classes
D. 6 classes


Answer: C

Mathematics

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Simplify the radical expression. Assume all variables represent nonnegative real numbers.

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