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OpenStudy (anonymous):
GIVING OUT MEDALS AND BECOMING A FAN:P The decay of 742 mg of an isotope is described by the function A(t)= 742e^-0.03t, where t is time in years. Find the amount left after 84 years. Round your answer to the nearest mg. Show all of your work for full credit.
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OpenStudy (perl):
did you plug in t = 84?
OpenStudy (gorv):
A(t)=742*e^(-0.03t)
OpenStudy (gorv):
after 84 year means t=84
OpenStudy (gorv):
A(84)=742*e^(-0.03*84)
OpenStudy (gorv):
solve it by calculator
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