To find out how much the students will earn in week 8, we first need to identify the pattern in their earnings over the first 6 weeks:
- Week 1: $110
- Week 2: $100
- Week 3: $90
- Week 4: $110
- Week 5: $100
- Week 6: $90
From this data, we can observe a repeating pattern:
- Weeks 1, 4 earn $110
- Weeks 2, 5 earn $100
- Weeks 3, 6 earn $90
The pattern cycles every 3 weeks: $110, $100, $90.
Now, to determine the amount earned in week 8:
- Week 7: The pattern would be the same as week 1 ($110)
- Week 8: The pattern would then mirror week 2 ($100)
Thus, the students will earn $100 in week 8.
So the answer is: 100.