Question

A certain forest covers an area of 3900 km2 . Suppose that each year this area decreases by 7.75% . What will the area be after 15 years?

Answer 1

1162.94 km²

Explanation:

forest cover area = 3900 km²

Area decreases every year by = 7.75 %

area after 15 years(A) = ?

`A=P(1-(r)/(100))^(15)\\A =3900(1-(7.75)/(100))^(15)\\A = 1162.94 / km^2`

so, the area of forest remaining after 15 years as it decreases by 7.75 % every year is equal to 1162.94 km²