The grаph оf is given belоw. Use the grаph tо аnswer the questions about . The scale of the graph for x is 1 unit. There is no need to show work on your paper for this problem. Note: Type the endpoints of the interval in the answer box (round to the nearest whole number). If there is no answer, type NA. a) f is increasing on ([lower1] , [upper1]) (Type the interval with lower values here.) f is increasing on ([lower2] , [upper2]) (Type the interval with higher values here.) b) f is decreasing on ([lower3], [upper3]) (Type the interval with lower values here.) f is decreasing on ([lower4], [upper4]) (Type the interval with higher values here.) c) f is concave up on ([lower5] , [upper5]) (Type the interval with lower values here.) f is concave up on ([lower6] , [upper6]) (Type the interval with higher values here.) d) f is concave down on ([lower7], [upper7]) (Type the interval with lower values here.) f is concave down on ([lower8], [upper8]) (Type the interval with higher values here.)