Answer:
Answers below
Explanation:
For 28 Students 300-90-(6*28) the answer is 42.
For 29 Students 300-90-(6*29) the answer is 36.
For 30 Students 300-90-(6*30) the answer is 30.
The greatest number of students that can go on the field trip for $300 is 35.
I've gotten this answer by doing 300-90-(6*35) which equals to 0.