To interpret the expression \(2.5x + 10\), we can break it down into its components:
- The term \(10\) represents a fixed cost, which in this context is likely the entry fee for the car.
- The term \(2.5x\) represents the variable cost, where \(x\) is the number of individual tickets (in this case, the number of people, which is 2 — Julio and Ashley) and \(2.5\) is the cost per individual entry.
Based on this interpretation, it can be concluded that the entry fee for the car is $10.00.
So, the correct answer is: The entry fee for the car was $10.00.