Please answer all 3 questions it ask

0 Points: 0 of1 is increasing and the intervals on which f(x) is decreasing. Then sketch the graph. 1' Find the intervals on which f(x) I6 2 Add horizontal tangent lines. f(x)=4+8xx2 w\" Select the correct choice below and, if necessary, ll in the answer box to complete your choice. 0 A- The function is increasing on |:]. (Type your answer using interval notation. Use a comma to separate answers as needed.) 0 B. There is no solution. I 1 . mare... M l; Iis View an example Get more help