Half-Life uses the formula N (t) = Noe No = Initial Amount t = time h = length of half-life. The half-life of caffeine in a healthy adult is 4.8 hours. Jeremiah drinks 18 ounces of caffeinated coffee in the morning. How long will it take for only 60% of the caffeine remain in his body? t = t In 5 3 In 2 5 In 2 (3) (3) 5 5 (3) 2 N|GT|Co (4.8) 231000/20 (18) (18) * In 2 (4.8)

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