Can anyone solve this for me Thanks

Assignment 9: Problem 6 Previous Problem Problem List Next Problem (1 point) Let f(w) = a:4 5.133 + 7m -| 8. Find the open intervals on which f is concave up (down). Then determine the w-coordinates of all inflection points of f. 1. f is concave up on the intervals f is concave down on the intervals The inflection points occur at a: = Notes: In the first two, your answer should either be a single interval, such as (0,1), a comma separated list of intervals, such as (inf, 2), (3,4), or the word "none". In the last one, your answer should be a comma separated list of :13 values or the word "none"