Consider the function below. C(X) = x1/7(x + s) (a) Find the interval of increase. (Enter your answer using interval notation.) H Find the interval of decrease. (Enter your answer using interval notation.) H (b) Find the local minimum value(s). (Enter your answers as a commaseparated list. If an answer does not exist, enter DNE.) H Find the local maximum value(s). (Enter your answers as a commaseparated list. If an answer does not exist, enter DNE.) H (c) Find the inflection points. (X, y) = ( ) (smaller x-value) (X, Y) = ( ) (larger Xvalue) Find the intervals where the graph is concave upward. (Enter your answer using interval notation.) H Find the interval where the graph is concave downward. (Enter your answer using interval notation.) H