Unformatted text preview: how much is left after 6000 years? How long do we have to wait before there is less than 2 milligrams? 18. A certain species of bacteria doubles its population every hour. The diﬀerential equation which models this phenomenon is ˙ y = ky , where k > 0 and y is the population of bacteria at time t . What is k ? 19. If a certain microbe doubles its population every 4 hours and after 5 hours the total population has mass 500 grams, what was the initial mass?...
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 Spring '07
 JonathanRogawski
 Math, Calculus, 4 hours, 5 hours, 6 days, 2 milligrams

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