Question 1173073
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Hi, 
A certain forest covers an area of 2100km^2. 
Suppose that each year this area decreases by 6.25%. 
As Your Instructor said:  
Take into account what happens at the close of the 1st year...
100%-6.25% = 93.75% ... it is .9375 of its size
What will the area be after 8 years?
{{{A[8] = A[0](.9375)^8 }}}  
{{{A[8] = 2100(.9375)^8}}} = 1253km^2  (rounding to nearest square kilometer)
Wish You the Best in your Studies.