A balloon is rising vertically above a level, straight road at a constant rate of 3 it/sec. Just when the balloon is 86 it above the ground, a s(t) is increasing by |ft/sec. bicycle moving at a constant rate of 13 ft/sec passes under it. How fast is the distance s(t) between the bicycle and balloon increasing 6 seconds later? (Simplify your answer.) y(t) s( t) 0 xt)