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.
[tex]8.50\cdot30=255[/tex]So, the earnings for this position is $255.
This position is paid 9.20 per hour. So, 30 hours earnings would be
[tex]9.20\cdot30=276[/tex]The earnings for this position would be
[tex]9.45\cdot30=283.50[/tex]$283.50 for 30 hours.
The earnings for this position are
[tex]7\cdot30=210[/tex]$210 for 30 hours.