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4. A fitness center purchased a number of exercise machines: 4 costing $1700 each, 8 costing $1300 each, and x costing $1200 each, where x is a positive odd integer. If the median price for all exercise machines purchased by the fitness center was $1300,what is the greatest possible value of x?
(B)The more we run at high altitudes
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6.to sit down : (to take a sitting position after standing)
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(1) After standing for so long, it was a pleasure to sit down and rest.
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