There are 4 questions. I tried to include the directions I was given. Will answer any questions about the problems if needed.

Find the critical points of the function f (x) = 45x 5 + x 5 Identify the open intervals on which the graph of the function is increasing or decreasing. Assume that the graph extends past what is shown. Enter your answers in increasing order. 10- 8- Identify the open intervals on which the graph of the function is concave upward or concave 6- downward. Assume that the graph extends past what is shown. 4- -10--8 .-6 -4 NO 2 4 - 6 . 8 10 *. 2- 6- -10 _-8 -6 -4- - 2 4- po 16 Find the fourth derivative of f (x) = 7 + In (x) - 162x