Find the intervals where the function is increasing and decr
     Find the intervals where the function is increasing and decreasing. Use this information to determine all local extrema. f(x) = (x-8)2/3  decreasing: (8, infinity); increasing: (-infinity, 8); local maximum f(8) = 0  decreasing: (-infinity, 8); increasing: (8, infinity); local maximum f(8) = 0  decreasing: (-infinity, infinity); no exterma  decreasing: (-infinity, infinity); no exterma 
  
  Solution
2) is the correct answer
