box C webwork.math.ucdavis.edu/webwork2/MAT16-McDonald-3-Fall-... Apps M Gmail YouTube Maps Translate Career Exploration |... R Entered Answer Preview Result -7, 0, 7 -7, 0, 7 correct (-infinity,-7) U (7 ,infinity) (-00, -7) U (7, 00) incorrect (-7,0) U (0,7) (-7, 0) U (0, 7) incorrect At least one of the answers above is NOT correct. 3 2 (1 point) Let f ( z) = 2 2 - 49 At what x-values is f' (x ) zero or undefined? -7,0,7 (If there is more than one such x-value, enter a comma-separated list; if there are no such x-values, enter "none".) On what interval(s) is f(x ) increasing? f(x) is increasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) On what interval(s) is f (x) decreasing? f(a) is decreasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) Note: You can earn partial credit on this problem. Preview My Answers Submit Answers Your score was recorded Your score was successfully sent to the | MS. Type here to search O a 9