\fAt noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 19 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per hour.) 29.59205233 x knots A company's revenue from selling x units of an item is given as R = 20005:: 31132. If sales are increasing at the rate of 30 units per day, how rapidly is revenue increasing (in dollars per day) when 220 units have been sold