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There was a sample of 350 milligrams of a radioactive substance to start a study. since then, the sample has decayed by 7.3% each year. let t be the number of years since the start of the study. let y be the mass of the sample in milligrams. write an exponential function showing the relationship between y and t .

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mhanifa

Answer:

  • y = 350*0.927^t

Step-by-step explanation:

  • Initial amount = 350 mg
  • Decay = 7.3% per year or 0.073
  • Time = t years
  • Final mass = y

The equation:

  • y = 350*(1 - 0.073)^t = 350*0.927^t

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