High School

Dimensions of Box 1: [tex]x \text{ by } 3x \text{ by } x^3[/tex]

The volume of Box 1 is given by:

A. [tex]3x^7[/tex]

B. [tex]3x^6[/tex]

C. [tex]3x^5[/tex]

D. [tex]5x^3[/tex]