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Question
A scientist studies a radioactive isotope for several years. There are initially 8000 radioactive isotopes that half every year. The scientist uses the expression 8000(1/2)^x to calculate the number of radioactive isotopes that remain after x years . what does (1/2)^x represent ?
The number that the initial number of radioactive isotopes is divided by
The current number of radioactive isotopes
The initial number of radioactive isotopes
The factor that the initial number of radioactive isotopes is multiplied by