nations Of Consider g(w) - -15(w2 -9) Determine the intervals on which g is concave down. g is concave down on: O g is concave down nowhere. Determine the intervals on which g is concave up. hs g is concave up on: O g is concave up nowhere. Determine the value and location of any inflection point of g. Enter the solution in (w, g(w) ) form. If multiple solutions exist, use a comma-separated list to enter the solutions. g has an inflection point at