Suppose that two people standing 2 mi (10,560 ft) apart at points A and B hear a car backfire. The time difference between the sound heard at point A and the sound heard at point B is 8 sec. If sound travels 1100 ft/sec, find an equation of the hyperbola (with foci at A and B) on which the point of origination of the sound must lie. Car dị d2 A(-5280, 0) B(5280, 0)

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