A certain forest covers an area of 3900 km2. Suppose that each year this area decreases by 4.25%. What will the area be after 15 years? Use the calculator provided and round your answer to the nearest square kilometer.

The multiplier for decreasing by 4.25% is 0.9575. To get our answer we times the area by the multiplier to the power of the amount of years:

3900 x 0.9575¹⁵ (it's to the power of 15 because of the fifteen years) = 2033.042km²

= 2033km² (to the nearest km²)