The function a=a_oe^{-0.01155x} a = a o e − 0.01155 x models the amount in pounds of a particular radioactive material stored in a concrete vault, where a_o a o is the original amount of material and x is the number of years since the material was put in the vault. if 900 pounds of material are placed in the vault, how much time will need to pass for only 357 pounds to remain? round your answer to the nearest tenth.

80.1 years of time will be needed to pass.

Step-by-step explanation:

Given expression:

Given :

A = 357 pounds

x = ?

Using the given expression:

Taking ln both sides:

x = 80.0570 years ≈ 80.1 years

80.1 years of time will be needed to pass.

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step-by-step explanation:

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (