( 4. A school band went on a trip to a music festival. The band director was admitted for free, but is cost \( \$ 100 \) to rent a bus for the trip and \( \$ 4 \) for each student. The total cost of the trip was \( \$ 244 \). Which equation can be used to find, \( s \), the number of students that went on the trip? \( 100+4 s=244 \) \( 4(100)+s=244 \) \( s(100+4)=244 \) \( 244+100=4 s \)

To find the equation representing the total cost of the trip, we start with the fixed cost of the bus rental, which is \$100. Each student adds an additional cost of \$4. Therefore, the equation designed to calculate the total cost is aimed at combining these elements to equal the overall expenditure of \$244. The correct equation is \( 100 + 4s = 244 \), where \( s \) represents the number of students. This equation effectively organizes costs, making it easy to understand how the fees accumulate for the trip. In real-world situations, managing budgets for school trips can be tricky. Using algebraic equations like this not only helps in budgeting scenarios but also aids students in grasping practical applications of math. It's essential to assess all costs and find ways to manage expenses within set limits – like seeking sponsorships or fundraising to lower the collective fees per student!