It would be B, hope i could help out.
Answer:10-3
2-4
Step-by-step explanation:
Answer:
He volunteered 10 hrs 15 min on average.
Step-by-step explanation:
The first week: 8 hrs
The second week: 12 hrs
The third week: 12 hrs
The fourth week: 9 hrs
8 + 12 + 12 + 9 = 41 hrs total
41 hours/4 weeks = 10.25 hrs (10 hrs 15 min)
divide both sides by a
subtract b from both sides
multiply all terms on both sides by -1
c=b-d/a
