Question: A hot-air balloon, headed due east at an average speed of 15 miles per hour and at a constant altitude of 100 feet, passes over

A hot-air balloon, headed due east at an average speed of 15 miles per hour and at a constant altitude of 100 feet, passes over an intersection (see the figure).Find an expression for the distance d (measured in feet) from the balloon to the intersection t seconds later.

East 15 mph 100 ft

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