help please

Use the graph of T' and I" to find the critical points and inflection points of f, the intervals on which fis increasing and decreasing, and the intervals of concavity. Then, graph fassuming 10] =0. 12 Find the intervals on which I is increasing and decreasing. is maeasing on (Type your answer in interval notation, Use a comma to separate answers as needed ] f is decreasing on (Type your answer in interval notation. Use a comma to separate answers as needed.) Find the intervals of concavity if is concave down on (Type your answer in interval notation. Lise a comma to separate answers as needed.) I is concave up on (Type your answer in interval notation Use a comma to separate answers as nooded.)