Acertain 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)

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.