Question

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A certain forest covers an area of 3300 km². Suppose that each year this area decreases by 6.75%. What will the area be after 11 years?
Round your answer to the nearest square kilometer.

Answer 1

849.75

Explanation:

3300-222.75x

x is the year

222.75 is 6.75%

3300-222.75(11)=849.75

Answer 2

849.75 km^2

Explanation:

First, 6.75% is equal to 0.0675

each year, it decreases by 0.0675 x 3300 or 222.75km^2

0.0675 x 3300

222.75 km^2

in 11 years, 11 x 222.75, 2450.25, will be gone

11 x 222.75

2450.25 km^2

that means 849.75 km^2 will be left:

3300 - 2450.25

849.75 km^2