please solve

Use correct notation. Don't forget to write your units of measure. Show all work and/or explain your thinking. If needed, round answers to 2 decimal places. 1) For the function / (x)= x +6x +9x+3 find the information listed below. (26 pts) a) Critical Values: b) Critical Points: c) Relative Maxima: d) Relative Minima: e) Horizontal Point of Inflection: f) All inflection points: g) Increasing on the interval(s): h) Decreasing on the interval(s): i) Concave up on the interval(s): i) Concave down on the interval(s)