Answer:
65
Step-by-step explanation:
Next year, there will be 3.5% fewer, so 100% - 3.5% = 0.965 times the number present this year. This same multiplication is repeated each year.
After 6 years, the number present will be 0.965^6 times the number this year, or ...
80 × 0.965^6 ≈ 80 × 0.80754 ≈ 64.60
There will be about 65 animals after 6 years.
