A cube has an edge of \( 5 \) feet. The edge is increasing at the rate of \( 6 \) feet per minute. Express the volume of the cube as a function of \( m , \) the number of minutes elapsed.
Hint: Remember that the volume of a cube is the cube (third power) of the length of a side.
\( V ( m ) = \square \) feet \( ^ { 3 }\)