Locker room attendant.
We know that this position is paid with a ratio of $8.50 per hour. So, let's multiply to find the earnings for 30 hours.

So, the earnings for this position is $255.
Bus server.
This position is paid 9.20 per hour. So, 30 hours earnings would be

Pantry help.
The earnings for this position would be

$283.50 for 30 hours.
Waiter/Waitress.
The earnings for this position are

$210 for 30 hours.