Solve the Problem. -A Certain Radioactive Isotope Decays at a Rate of 2

question 26

Multiple Choice

Solve the problem.
-A certain radioactive isotope decays at a rate of 2% per 100 years. If t represents time in years and y represents the amount of the isotope left then the equation for the situation is y = y0e^-0.0002t. In how many years will
There be 89% of the isotope left?

• A) 583 years
• B) 550 years
• C) 244 years
• D) 1100 years

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