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If a rectangle's length and width are both doubled, by what percent is the rectangle's area increased?
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If a rectangle's length and width are both doubled, by what percent is the rectangle's area increased?
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On the xy-coordinate plane, points A and B both lie on the circumference of a circle whose center is O, and the length of AB equals the circle\'s diameter. If the (x,y) coordinates of O are (2,1) and the (x,y) coordinates of B are (4,6), what are the (x,y) coordinates of A?
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At 10 a.m. two trains started traveling toward each other from stations 287 miles apart. They passed each other at 1:30 p.m. the same day. If the average speed of the faster train exceeded the average speed of the slower train by 6 miles per hour, which of the following represents the speed of the faster train, in miles per hour?
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If r = (3p+q)/2 and s = p - q, for which of the following values of p would r2 = s2?
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