Margaret packs colored cubes into shipping boxes. She has a function b(x)=x+2 that gives the edge length of the box, in centimeters, given the edge length x of the cube.

What is the volume, in cubic centimeters, of a shipping box for a colored puzzle cube with an edge length x of 8 centimeters, where V=x3?


a. 216
b. 512
c. 640
d. 1000