(1 point) Consider the function f(x) = sz + 6x 10. Find the critical value(s), x0 of the function. 360 = ::: Round to three decimal places if needed. \f(1 point) a) Findf '(x)- as; b) Identify the graph that displays f in blue and f' in red. '2 v H H c) Using the graphs off and f ' , indicate where f is increasing and decreasing. Give your answer in the form of an interval. NOTE: When using interval notation in WeBWorK, remember that: You use 'INF' for 00 and '-INF' for oo. And use 'U' for the union symbol. Enter DNE if an answer does not exist. f is increasing on f is decreasing on (1 point) The given graph of the DERIVATIVE f' of a function f is shown. Assuming the graphs continue in the same way as x goes to infinity and negative infinity, answer the following questions. -6 -6 1. On what intervals is f increasing? Answer (in interval notation): 2. On what intervals is f decreasing? Answer (in interval notation)