2. (3 pts) The area of a healing wound is given by A = mr . Suppose the radius of the wound is currently 25 millimeters, and the radius of the wound is changing at the rate of -1 mm per day. a) About how fast is the area of the wound changing? b) Is it increasing or decreasing? Why? a) Exact answer with pi b) 3. (5pts) For the equation given below, evaluate exactly y' = dy/dx at the point (2,1): xy' + xy = 4 Solution: Answer: y' = 7 = at (2,1) is