To determine the amount the students will earn in week 8, we first need to identify the pattern in the earnings.
From the data provided:
- Week 1: $110
- Week 2: $100
- Week 3: $90
- Week 4: $110
- Week 5: $100
- Week 6: $90
We can see that the earnings appear to follow a repeating pattern every 3 weeks:
- Weeks 1, 4: $110
- Weeks 2, 5: $100
- Weeks 3, 6: $90
Following this pattern, we can predict the earnings for weeks 7 and 8:
- Week 7 would correspond to Week 1 in the pattern, so the earnings should be $110.
- Week 8 would correspond to Week 2 in the pattern, so the earnings should be $100.
Thus, the students will earn $100 in week 8.
The answer is: $100.