anonymous
  • anonymous
SOmeone help me please 2. The half-life of a radioactive substance is the time it takes for half of the substance to decay. Phosphorus-32 has a half-life of 14.3 days. a. Write an exponential decay function for a 50 mg sample. b. How much phosphorus remains after 84 days?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
half life means you can use \(\frac{1}{2}\) as the base of your exponential function
anonymous
  • anonymous
starting with 50 grams means the 50 goes out front
anonymous
  • anonymous
14.3 days means divide \(t\) by \(14.3\)

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anonymous
  • anonymous
set it up as \[\huge f(t)=50\left(\frac{1}{2}\right)^{\frac{t}{14.3}}\]
anonymous
  • anonymous
f(t)=50
anonymous
  • anonymous
right?
anonymous
  • anonymous
i wrote \(f(t)\) above
anonymous
  • anonymous
i know?
anonymous
  • anonymous
im lost :/

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