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A radioactive substance is safe to handle when there is less than 1 gram left of it. If the substance has a decay rate of 70% per year, how long will it be before a 150 g substance is safe to handle?

A radioactive substance is safe to handle when there is less than 1 gram left of it. If the substance has a decay rate of 70% per year, how long will it be before a 150 g substance is safe to handle?

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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9. A radioactive substance is safe to handle when there is less than 1 gram left of it. If the substance has a decay rate of 70% per year, how long will it be before a 150 g substance is safe to handle? O between 1 and 2 years between 10 and 12 years O between 7 and 8 years O between 5 and 6 years
Transcribed Image Text:9. A radioactive substance is safe to handle when there is less than 1 gram left of it. If the substance has a decay rate of 70% per year, how long will it be before a 150 g substance is safe to handle? O between 1 and 2 years between 10 and 12 years O between 7 and 8 years O between 5 and 6 years
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