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23 April, 14:40

The amount of radioactive isotope decays in half every year. The amount of the isotope can be modeled by f (x) = 346 (1/2^x and f (1) = 173. What does the 173 represent? A. The starting amount of the isotope B. The amount of the isotope after one year C. The rate the isotope decreases D. The number of years that have passed.

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  1. 23 April, 15:56
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    Your answer is ...

    B. The amount of the isotope after one year

    Input "1" into the formula for the half-life of the isotope and you'll get 173; representing the remaining amount of matter "after one year."
  2. 23 April, 17:00
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    B. The amount of the isotope after one year
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