How do you do THIS algebra 2 problem?

A radioactive Isotope is decaying at a rate of 18% every hour. Currently there is 100 grams of the substance. How much of the isotope will be left in 1 day?

Comments

  • Q = 100*(1 - 0.18)^24

    = 0.854 g

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  • well none, think about it, 100 divided by 18 is 5.45 so in around 5 hours it would be completely decayed?

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