Question

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

Select all the possible outputs for the function defined by C(x)=30x
where x is the number of students going on the fieldtrip.

(1 point)
Responses

50
50

30
30

100
100

20
20

90
90

Answer 1

30 and 90

Explanation: C(x)=30x produces multiples of 30 (30, 60, 90, ...), so only 30 and 90 appear in the given list.