calculus 1

A balloon is rising vertically above a level, straight road at a constant rate of 2 ft / sec. Just when the balloon is 62 ft above the ground, a bicycle moving at a constant rate of 17 ft / sec passes under it. How fast is the distance s(t) between the bicycle and balloon increasing 3 s(t) is increasing by |ft/ sec. seconds later? (Simplify your answer.) s(t) x( t) Enter your answer in the answer box