A local drive-in theatre sells entrance tickets for cars on weekend night. at capacity, the drive-in can hold 72 cars. the function C(n)=25n represents the drive-in's revenue on a weekend night, where n represents the number of cars. in the situation, what is the domain of C(n)?

All real numbers.
All positive rational numbers.
All positive integers less than or equal to 72.
All positive integers that are multiples of 25.

The correct answer is: All positive integers less than or equal to 72.

In this situation, the function C(n) = 25n represents the drive-in's revenue on a weekend night, where n represents the number of cars. The domain of C(n) is the set of all possible values that n can take.

Since the drive-in can hold a maximum of 72 cars, the number of cars (n) cannot exceed 72. Therefore, the domain of C(n) is the set of all positive integers less than or equal to 72.