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7) Cobalt -60 has a half life of 5.4 years. A sample of 75 mg is present today. a) Write an equation to relate the amount of cobalt-60 remaining after t years of time. b) What amount will be present in 13.5 years. Show your calculations. c) Approximately how many years will it take for the amount of cobalt-60 to decay to 12.5 % of its initial amount. Show all steps of your work for full credit.

7) Cobalt -60 has a half life of 5.4 years. A sample of 75 mg is present today. a) Write an equation to relate the amount of cobalt-60 remaining after t years of time. b) What amount will be present in 13.5 years. Show your calculations. c) Approximately how many years will it take for the amount of cobalt-60 to decay to 12.5 % of its initial amount. Show all steps of your work for full credit.

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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7) Cobalt -60 has a half life of 5.4 years. A sample of 75 mg is present today. a) Write an equation to relate the amount of cobalt-60 remaining after t years of time. b) What amount will be present in 13.5 years. Show your calculations. c) Approximately how many years will it take for the amount of cobalt-60 to decay to 12.5 % of its initial amount. Show all steps of your work for full credit.
Transcribed Image Text:7) Cobalt -60 has a half life of 5.4 years. A sample of 75 mg is present today. a) Write an equation to relate the amount of cobalt-60 remaining after t years of time. b) What amount will be present in 13.5 years. Show your calculations. c) Approximately how many years will it take for the amount of cobalt-60 to decay to 12.5 % of its initial amount. Show all steps of your work for full credit.
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