Lexie earned $64.38 for working from 8: 00 am to 4: 15 pm. within that time, she took a 1 hour lunch break for which she did not get paid. how much does lexie earn per hour?

Well we know that she made $64.38 from 8:00am to 4:15pm
and she took a 1 hour lunch break so all we would have to do is remove that hours because she doesn't earn anything in that hour
so from 8:00 am to 4:00 pm is 8 hours however with the lunch break that she earns no money is -1 hour so she would work for 7 hours for $64.38 now all we have to do is divide to find the rate.
64.38/7=9.197 so she would make about $9.20 an hour