(x, y) = Find the interval where the graph is concave upward. (Enter your answer using interval notation.) A/ Find the interval where the graph is concave downward. (Enter your answer using interval notation.) Use the information above to sketch a graph. In the box, write "see graph". On your written paper, draw the graph. A/ Consider the function below. (If an answer does not exist, enter DNE.) f(x) = x√9-x. You may use the fact that fl(x) 18-3x 2√√9-x 3x-36 and fil = 4√(9-x)3 n Find the interval of increase. (Enter your answer using interval notation.) Find the interval of decrease. (Enter your answer using interval notation.) Find the local minimum value(s). (Enter your answers as a comma-separated list.)

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