To interpret the expression \(2.5x + 10\), let's break it down:
- The term \(2.5x\) implies that there is a charge of $2.50 for each individual (where \(x\) represents the number of individuals).
- The term \(10\) indicates a fixed cost, which represents the entry fee for the car.
From this analysis:
- Each individual entry fee is $2.50, not $10.00.
- The entry fee for the car is $10.00.
Based on the options given, the accurate interpretation of a part of the algebraic expression is:
The entry fee for the car was $10.00.