Thirty percent of a radio-active substance decays in 7 days, what is the half-life of the substance? O 13.07 days 14.65 days O 15.33 days O 13.61 days
Thirty percent of a radio-active substance decays in 7 days, what is the half-life of the substance? O 13.07 days 14.65 days O 15.33 days O 13.61 days
Chapter10: Exponential And Logarithmic Functions
Section10.5: Solve Exponential And Logarithmic Equations
Problem 10.90TI: The half-life of radioactive iodine is 60 days. How much of a 50-mg sample will be left in 40 days?
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