Suppose that for a company manufacturing calculators, the cost, revenue, and prot equations are given by 2 x C=80,000+20x, R=200xE' P=RC where the production output in 1 week is x calculators. If production is increasing at a rate of 500 calculators per weel when production output is 6,000 calculators. Find the rate of increase (decrease) in cost, revenue, and profit. A) Costs are l:| at the rate of $|:| per week at this production level. (Simplify your answer.) A boat is being pulled toward a dock as shown in the gure to the right. If the rope is being pulled in at the rate of 3 feet per second, how fast is the ROpc 4 distance between the dock and the boat decreasing when it is 3 feet from the dock? Boat Dock The distance between the dock and the boat is decreasing by D feet per second when the boat is 3 feet from the dock. (Round to the nearest thousandth as needed.)