The position of a toy train on a straight track is given by the following table. Find the velocity at t = 0.7 by averaging the average rate of change over the left and right intervals. t (sec) 0.2 0.5 0.7 1.0 1.2 s (ft) 0.8 2.9 4.7 7.7 10.9 O Answer not listed O 11 ft/sec 10 ft/sec O 9 ft/sec O 9.5 ft/sec O 11.5 ft/sec

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