C is the awnser to that question
Answer:
-250
Step-by-step explanation:
I don't know for sure but I hope it's correct.
So he worked 30.5 hours, he just didn't write some of the hours down. To find the hours he didn't write down, you subtract 8+

+

from 30.5, which equals
42.52 g
im pretty sure this is the answer