math
posted by sarah .
the frame for a shipping crate is to be constructed from 24 feet of 2 by 2 lumber.
if the crate is to have square ends of side x feet, express the outer volume V as a function of x (disregard the thickness of the lumber)

V = x^2 * y
where 8x + 4y = 24
so, y = 62x
V = x^2 (62x)