$
4
Explanation:
The total time parked is from 11:30am to 2:15pm which is 2 hours 45 minutes. Because of the way the parking is charged, you will need to round up to the nearest half hour, meaning you have to pay up until 2:30pm. In total, this is three hours.
The first hour is charged at
$
2
, and each additional hour is charged at
$
1
, making a total of
$
4
.
Alternatively, you could drive around a little and find an off road parking space for free! ;)