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.

849.75 km^2

Step-by-step 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

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.

#12 the answer is the third option