worth P5,000,000. 2. Exponential Decay The amount of radioactive material present at timet is given by A = Agekt where Ao is the initial amount, k

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Extracted text: worth P5,000,000. 2. Exponential Decay The amount of radioactive material present at timet is given by A = Agekt where Ao is the initial amount, k<0 is="" the="" rate="" of="" decay.="" radioactive="" substances="" are="" more="" commonly="" described="" in="" terms="" of="" their="" half-life="" or="" the="" time="" required="" for="" half="" of="" the="" substance="" to="" decompose.="" determine="" the="" half-life="" of="" substance="" x="" f="" after="" 600="" years,="" a="" sample="" has="" decayed="" to="" 85%="" of="" its="" original="">