Question 703819
This is not really a maximization problem, but you know you want less than 69 cm. perimeter.


Description gave:
w = width
a = 2w-3


Perimeter, p=2a+2w,
p=2(2w-3)+2w
p=6w-6


The perimeter condition,
6w-6<69
6w<69+6
6w<75
w<12.5