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03-25-2008, 08:28 PM
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| i need some help with precalc. homework...?
when a certain medicine enters the blood stream, it gradually dilutes, decreasing exponetially with a half-life of 3 days. The initial amount of the medicine in the blood stream is A sub 0 milliliters. What will the amount be 30 days later? An amount A sub 0 of radioactive iodine has a half-life of 8.1 days. In terms of A sub 0, how much is present after 5 days? (radioactive iodine is used to evaluate the health of the thyroid gland) If the price of sneakers increases 6% every year, about how long will it take for the price to double? thanks for your help      |
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