Why is the value of x limited to 0 in. < x < 4.25 in.?

Answer:
Lengths can't be negative
Step-by-step explanation:
Dimensions of the base are:
(8.5-2x) × (11 - 2x)
Since length cannot be negative:
x > 0
8.5 - 2x > 0
2x < 8.5
x < 4.25
11 - 2x > 0
x < 5.5
The set of values of x which satisfies all is:
0 < x < 4.24