Answer:
There was a increase of 1.7% over these three years
Step-by-step explanation:
Multipliers:
For a decrease of a%, we multiply by: ![\frac{100-a}{100}](https://tex.z-dn.net/?f=%5Cfrac%7B100-a%7D%7B100%7D)
For a increase of a%, we multiply by: ![\frac{100+a}{100}](https://tex.z-dn.net/?f=%5Cfrac%7B100%2Ba%7D%7B100%7D)
What was the percentage increase/decrease of groundhogs over these three years?
Decrease of 12%(multiplication by 0.88).
Increase of 6%(multiplication by 1.06).
Increase of 9%(multiplication by 1.09).
After these three years:
0.88*1.06*1.09 = 1.017
1.017 - 1 = 0.017
0.017*100% = 1.7%
There was a increase of 1.7% over these three years