what 070, year would the account be worth one billion dollars? 56. A certain drug has a half-life of about 3 days. That is, after 3 days of taking the drug, only half of the original quantity will be left in your system. (a) What percentage of the drug will be left after 1 day? (b) What percentage of the drug will be left after 8 days? (c) If you take a does of 116mg, how many days will it be until there is only 15mg left in your system? 57. A population of bacteria initially has 90,000 present and in 2 weeks there will be 200, 000 bac- teria present

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