Answer:
7
Explanation:
Start with $30.
Subtract $5 for the admission: $30 - $5 = $25.
Now he has $25 to spend on rides. Each ride costs $3.5, so we divide $25 by $3.50.
$25/$3.50 = 7.14
Since the number of rides must be a whole number, he can go on 7 rides.