To set up the equations, we need to define the total cost \( C \) as a function of the number of students \( s \).
For the Regal Hotel, the total cost consists of a fixed rental fee of $500 plus $75 per student, so the equation is: \[ C = 500 + 75s \]
For the Greenhill Country Club, the total cost consists of a fixed rental fee of $1,000 plus $65 per student, so the equation is: \[ C = 1000 + 65s \]
Therefore, the correct pair of linear equations representing this real-world problem is:
- Regal Hotel: \( C = 75s + 500 \)
- Greenhill Country Club: \( C = 65s + 1000 \)
None of the provided options match this formulation directly in terms of the variable placement, but the closest correct relationship based on the fixed costs and cost per student is:
Regal Hotel: C = 75s + 500; Greenhill Country Club: C = 65s + 1000 (Note that I flipped the terms to reflect the constant and variable correctly).