They are essentially asking us to solve:
![357=900e^{-0.01155x} \implies\\ \frac{357}{900}=e^{-0.01155x} \implies\\ \ln{\frac{357}{900}}=-0.01155x \implies \\ x\approx 80.1](https://tex.z-dn.net/?f=%20357%3D900e%5E%7B-0.01155x%7D%20%5Cimplies%5C%5C%20%5Cfrac%7B357%7D%7B900%7D%3De%5E%7B-0.01155x%7D%20%5Cimplies%5C%5C%20%5Cln%7B%5Cfrac%7B357%7D%7B900%7D%7D%3D-0.01155x%20%5Cimplies%20%5C%5C%20x%5Capprox%2080.1%20)
Solving this equation for x tells us that it will take around 80.1 years for the materials in the vault to reduce to 357 pounds.
42,600 - 25,800 = 16800. That is the increase in 15 years.
You then calculate the increase as a percentage of the original population; 25,800.
16,800 / 25,800 * 100 = 65.11%
Answer:
I think it is b
Step-by-step explanation:
I hope this is correct
Answer:
Step-by-step explanation:
4