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Concept explainers
a.
How much of a 0.2-gram sample remains after 72 years.
a.
![Check Mark](/static/check-mark.png)
Answer to Problem 15PPS
Explanation of Solution
Given:
The number of grams A of Plutonium-241 left after t years can be modeled by
Calculation:
The number of grams A of Plutonium-241 left after t years can be modeled by
Here given that initially the sample amount was
Thus, the amount of Plutonium-241 left after 72 years was
b.
How much of a 5.4-gram sample remains after 1095 days.
b.
![Check Mark](/static/check-mark.png)
Answer to Problem 15PPS
Explanation of Solution
Given:
The number of grams A of Plutonium-241 left after t years can be modeled by
Calculation:
The number of grams A of Plutonium-241 left after t years can be modeled by
Here given that initially the sample amount was
Thus, the amount of Plutonium-241 left after 1095 days was
Chapter 9 Solutions
Algebra 1
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