A type of radioactive element has a daily radioactive decay rate of 0.5%. If 14 pounds of this element are available today, find how much will still remain after 140 days. Use y = 14(2.7) 0.005t and let t be 140. If needed, enter your answer to 5 decimal places.

A type of radioactive element has a daily radioactive decay rate of 0.5%. If 14 pounds of this element are available today, find how much will still remain after 140 days. Use y = 14(2.7) 0.005t and let t be 140. If needed, enter your answer to 5 decimal places.

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter5: Exponential And Logarithmic Functions

Section: Chapter Questions

Problem 28T: The half-life of radioactive actinium ( 227AC ) is 21.77 years. What percent of a present amount of...

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Question

A type of radioactive element has a daily radioactive decay rate of 0.5%. If 14 pounds of this element are
available today, find how much will still remain after 140 days. Use y = 14(2.7)
0.005t
and let t be 140. If
needed, enter your answer to 5 decimal places.

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