(Solved): Consider the following graph. (Note: The curve ends at the point (7,6). ) (a) Find the interval(s) ...

Consider the following graph. (Note: The curve ends at the point $(7,6)$. ) (a) Find the interval(s) on which $f$ is increasing. (Enter your answer using interval notation.) (b) Find the interval(s) on which $f$ is decreasing. (Enter your answer using interval notation.) (c) Find the interval(s) on which $f$ is concave upward. (Enter your answer using interval notation.) (d) Find the interval(s) on which $f$ is concave downward. (Enter your answer using interval notation.) (e) Find the coordinates of the inflection point(s). (Order your answers from smallest to largest $x$, then from smallest to large: $\begin{array}{l}(x,y)=(\\ (x,y)=(\\ (x,y)=(\end{array}$