Question 1090675
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Plug in t = 31 and use a calculator to evaluate.


m(t)=300(1/2)^(t/24)
m(31)=300(1/2)^(31/24)
m(31)=122.543658993082
m(31)=122.5


You'll have <font color=red>122.5 grams</font> of thorium left over after 31 days.
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