The restrictions on the variables x and y are given as follows:
x ∈ W, y ∈ W.
How to obtain the restrictions to the variables x and y?
The first step in obtaining the restrictions of the variables x and y are identifying them, which is done as follows:
- Variable x: number of lower bowl tickets sold.
- Variable y: number of upper bowl tickets sold.
Then we known that we usually hear it in the news things such as this sentence:
"On the last Buffalo Bills game, 60,000 tickets were sold".
The amount of tickets sold varies, but the type of number doesn't, it is always a positive non-decimal number.
The number of ticket sold cannot assume neither negative nor decimal values, thus the variables x and y belong to the whole number set and the first option is correct.
More can be learned about restrictions of variables at https://brainly.com/question/28344152
#SPJ1
