Answer:
19 rides
Step-by-step explanation:
First, you have to subtract the admission cost from the total amount you possess.
$18.00
- 3.50
------------
$14.50
Next, you must divide the amount left over ($14.50) by $0.75.
$14.50 ÷ $0.75
≈ 19.33..(repeating)
Since you can't go on 1/3 of a ride, the total number of rides you may go on is 19.