Increasing: \((1,6)\),\((8,\infty)\)
Decreasing: \((−\infty,1)\),\((6,8)\)
Local Minimum at \(x = 1, 8\)
Local Maximum at \(x = 6\)
Concave Upward: \((−\infty, 2)\), \((3, 5)\), \((7, \infty)\)
Concave Downward: \((2, 3)\), \((5, 7)\)
Inflection Points at \(x = 2,3,5,7\)