Posted by shelia on .
the lengthnof a rectangular jewelry box is 3 inches more than twice the width. the perimeter is 30 inches. find the length and the width?

algebera 
helper,
w = width
2w + 3 = length
P = 2w + 2L
30 = 2w + 2(2w + 3)
Solve for w, the width.
2w + 3 = length