I’m pretty sure it’s number two in my opinion
If x represents the length of the box, then 42-x will be the girth. Since the largest area for a given girth is that of a square, the side length of the square cross section is (42 -x)/4.
The volume as a function of package length is then
.. v(x) = x((42-x)/4)^2
This has a maximum at x=14. The corresponding volume is 686 in^3.
Answer:
where am i supposed to find the x if you haven't given the equation for the sum
Step-by-step explanation: