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Solve this application problem using a system of equations: A university bookstore recently sold graph paper for $1.64 per package, and college-ruled notebooks for $1.17 each. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $66.02. How many of each type were sold?
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Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?
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