Question

Can anybody tell me the answer?

Answer 1

I can see it clearly

Answer 2

For this case we have an equation of the form:
 $y = A * (b) ^ x$
 Where,
 A: Initial area
 b: decrease rate
 x: number of years
 Substituting values we have:
 $y = 4100 * (0.9675) ^ x$
 Then, for the year number 6, we substitute the value of x = 6 in the equation.
 We have then:
 $y = 4100 * (0.9675) ^ 6 y = 3363 km ^ 2$
 Answer:
 The area covered by the forest will be:
 $y = 3363 km ^ 2$