Consider h(v) = 4v(-8 - v) 3 Determine the intervals on which h is concave down. Oh is concave down on: Oh is concave down nowhere. Determine the intervals on which h is concave up. Oh is concave up on: his Oh is concave up nowhere. Determine the value and location of any inflection point of h. Enter the solution in (v, h(v) ) form. If multiple solutions exist, use a comma-separated list to enter the solutions. Oh has an inflection point at