9. The questions are unrelated. (a) The volume of a cube starts out as Scm3. Suppose the sphere shrinks so that its volume becomes 7.9cm3. Using differentials, find the approximate change in the side length of the cube. No points if differentials are not used. Simplifr your answer as far as reasonable. The volume of a cube is given by the formula V = s3, where s is the side length. (b) Suppose we wish to approximate the solution to + 3x = 1 using Newton's Method. For this equation, set up the Newton's iteration formula. Then use it to find XL, if the starting value