Acertain forest covers an area of
3400 km^2. suppose that each year this area decreases by 7%. what will the area be after 15 years?

1144.78 Km^2

Step-by-step explanation:

If the forest covers an area of  3400 km^2 and it decreased by 7%, the new area covered after a year will be equal to 3400 less the product of 3400 and 7%

= 3400 - 7% * 3400

= 3400 (1 - 0.07)

After the second year, the area becomes

= 3400 (1 - 0.07) - 7% * 3400 (1 - 0.07)

= 3400 (1 - 0.07)(1 - 0.07)

= 3400 (1 - 0.07)²

Following this pattern, the area after 15 years

= 3400 (1 - 0.07)^15

= 1144.782931  km^2

i need more info. are you looked to see there mph? how much they deliver? how far they go?

step-by-step explanation:

the radius is 2 times the diameter.

step-by-step explanation: