Answer:
I find it frustrating when responses don't start with A, B, C, or D, but in this instance, the correct choice is B.
Step-by-step explanation:
Answer:

The variable x lies within the interval of all positive real numbers less than 5 cm.
Detailed solution:
Problem statement:
Determine the volume of the open-topped box as a function of the side length x (in centimeters) of the square cutouts.
Refer to the provided diagram for clarity.
Define:
x → length in centimeters of each square cutout side
The volume of the box with open top can be written as:

Given this, we have:



By substitution:

Determine the domain of x:
Because:

Therefore:
Domain is the interval (0,5)
That means all real numbers strictly greater than zero and less than 5 cm are valid for x.
Hence, the volume V as a function of x is:

Utilize the! operation to determine the count of combinations.
8!/5! = 40,320/120 = 336