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Mathematics 14 Online
OpenStudy (anonymous):

A north-south highway intersects an east-west highway at point P. An automobile crosses P at 10:00 A.M., traveling at a constant rate of 20 miles per hour. At that same instant, another automobile is 2 miles north of P, traveling south at 50 miles per hour. a) Find a formula for the distance, d, between the automobiles t hours after 10:00A.M. b) At approximately what time with the automobiles be 104 miles apart?

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