Answer:
100 + 4s = 244
Explanation:
Let s be the number of students that went on the trip.
Each student had to pay 4$ to get into the festival
So, the cost of the ticket of "s" students = 4s
Bus rent + cost of the ticket for "s" students = 100 + 4s = 244
So the equation used is 100 + 4s = 244