Question: Postal restrictions If a box with a square cross section is to be sent by the postal service, there are restrictions on its size such that its volume is given by V = x2(108 - 4x), where x is the length of each side of the cross section (in inches).
(a) If V = V(x), find V(10) and V(20).
(b) What restrictions must be placed on x (the domain) so that the problem makes physical sense?