Showcase extra: the real practice and quiz players do not have this button.
Correct answer: C.
- Identify the parts: The $5 entry fee is paid once. It is the constant. The $3 charge repeats every hour. It is the rate, so the hourly cost is .
- Build the equation: Total paid = hourly charges + one-time fee: .
- Check by solving: Subtract 5: . Divide by 3: . Six hours at $3 is $18, plus the $5 entry fee, gives $23. ✓
