5. Let g be the function given by g(x) = x 4x+6x-4x+k, A. On what intervals...

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5. Let g be the function given by g(x) = x 4x+6x-4x+k, A. On what intervals is g increasing? Justify your answer. where k is a constal B. On what intervals is g concave upward? Justify your answer. I 5. Let g be the function given by g(x) = x 4x+6x-4x+k, A. On what intervals is g increasing? Justify your answer. where k is a constal B. On what intervals is g concave upward? Justify your answer. I