9. A square of side x inches is cut out of each corner of a 9in. by 12in. piece of cardboard and the sides
are folded up to form an open-topped box.
A. Write the volume V as a function of its side x.
B. State the domain of the function.
C. Graph the function V, to find the maximum volume of the box.

9 A square of side x inches is cut out of each corner of a 9in by 12in piece of cardboard and the sides are folded up to form an opentopped box A Write the volu class=