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MCQ

Carbon-14 is an element which loses half of its mass every 57305730 years. The following function gives the mass, in grams, of a sample of carbon- 14 after tt years:

M(t)=65e0.00012tM(t)=65 e^{-0.00012 t}

What is the instantaneous rate of change of sample’s mass after 1 year?

Select all that apply :

0.00780.0078 grams per-year

0.780.78 years per gram

0.780780.78078 years per gram

0.780.78 grams per year

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