2. A certain plutonium isotope decays at a rate proportional to the amount present. Approximately 15% of the original amount decomposes in 100 years. How much amount of the substance has decayed after 600 years? Also find the half-life ti

Intermediate Algebra
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Chapter10: Exponential And Logarithmic Functions
Section10.5: Solve Exponential And Logarithmic Equations
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2. A certain plutonium isotope decays at a rate proportional to
the amount present. Approximately 15% of the original
amount decomposes in 100 years. How much amount of the
substance has decayed after 600 years? Also find the half-life
= of this radioactive substance; that is, find the time required
for this substance to decay one-half of its original amount.
Transcribed Image Text:2. A certain plutonium isotope decays at a rate proportional to the amount present. Approximately 15% of the original amount decomposes in 100 years. How much amount of the substance has decayed after 600 years? Also find the half-life = of this radioactive substance; that is, find the time required for this substance to decay one-half of its original amount.
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