Question

The cost for an upcoming field trip is $30 per student. The cost of the field trip, is dollars, is a function of the number of students x.

Select ALL the possible inputs (domain) for the function defined by C(x)=30x
where x is number of students attending the field trip.

(1 point)
Responses

14 3/4

4.5

45

22

15

Answer 1

The function \( C(x) = 30x \) represents the cost of the field trip as a function of the number of students \( x \). Since \( x \) represents the number of students, it must be a non-negative whole number (integer). The possible inputs (domain) for this function should therefore be non-negative integers.

Among the given options:

- 14 3/4: Not a valid input (not an integer)
- 4.5: Not a valid input (not an integer)
- 45: Valid input (integer)
- 22: Valid input (integer)
- 15: Valid input (integer)

Therefore, the valid inputs (domain) for the function are: **45, 22, and 15**.