E Homework: MML H... Question 5, 3.10.32 HW Score: 14.29%, 1 of 7 points Part 1 of 2 O Points: 0 of 1 Save A dinghy is pulled toward a dock by a rope from the bow through a ring on the dock 9 ft above the bow. The rope is Ring at edge hauled in at the rate of 3 fu/sec. Complete parts (a) and.(b). of dock 19' . . . .. a. How fast is the boat approaching the dock when 15 ft of rope are out? fu/sec (Type an integer or a simplified fraction.)