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Suppose a person travels at a rate of 5 ft/hr toward the foot of a street lamp pole 69 ft high. The height of

 

Suppose a person travels at a rate of 5 ft/hr toward the foot of a street lamp pole 69 ft high. The height of the person is 5.9 ft. At what rate is the distance from the head of the person to the top of the street lamp changing when 77 ft from ke bottom of the street lamp?

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