I am confused about these 3 questions.

2. Find the value of x such that the Mean Value Theorem is satised for x) : L over 1 x the interval 2 S x S 3 . Ifthere is no such value, state so. 3. The radius of a sphere is increasing at a constant rate of 2 metersfsecond. At what rate is the surface area increasing when the surface area is equal to the volume of the sphere? 4. An open can is dropped into a lake and oil begins to spill as a circular disk with uniform thickness whose radius increases at a constant rate of 10 mfsec. At the moment when the radius is 1 meter, the thickness of the oil is decreasing at the rate of 0.04 meters per second. How fast is the thickness decreasing when the radius is 2 meters