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OpenStudy (anonymous):
suppose y varies directly with x, and the value y=25 when x=140. What is the value of x when y=36? a)140 b)165 C)201.6 D)176 The point (12.9) is included in a direct variation. What is the constant of variation? A)1/2 B)3/4 C)1 D)2 The distance d a train travels varies directly with the amount of time t that has elapsed since departure. If the train travels 475 miles in 9.5 hours. How many miles did the train travel after 4 hours?
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