A certain forest covers an area of 3100. Suppose that each year this area decreases by 4.75% . What will the area be after 7 yea
rs?
2 answers:
9514 1404 393
Answer:
2205
Step-by-step explanation:
The area is multiplied by 1-4.75% = 0.9525 each year. After 7 years, the multiplication factor is 0.9525^7. Then the area is predicted to be ...
3100 × 0.9525^7 ≈ 2205
Answer:
Step-by-step explanation:
This can be represented as exponential decreasing function.
y = a(1 - r)t
a = starting amount
r = rate
t = years
y = 1600(1 - .0725)15
= 1600(.9275)15
= 1600(.32337673)
= 517.40
In 15 years, the forest will shrink in size to 517.40 km2
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