Suppose you take a piece of cardboard measuring 7 inches by 7 inches, cut out square corners with sides x inches long, and then fold up the cardboard to make an open box. Express the volume V of the box as a function of x.

Answer 1

I knew this question sounded familiar.
I answered it two days ago.

http://www.jiskha.com/display.cgi?id=1245803469

Answer 2

The link shows something like the box described in the question. Disregard the cover.
(Broken Link Removed)

Width of the box = 7-x-x = 7-2x
Length of the box = 7-x-x = 7-2x
Height of the box = x
Can you calculate the volume?

Answer 3

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