Unformatted text preview: years ago. (a) Find the decline rate. (b) When will the population be 50% of the original? (find the half-life) 4) How long does it take amount to double at 8.5% compounded: a) annually b) continuously 5) If the quantity of a certain radioactive substance is decreases by 5% in 10 hours, find the half-life. 6) The population of a certain town is declining exponentially due to immigration. If only 80% of the original population are still in town after 10 years: a) Find the decline rate. b) How long will it take for the population to be half what it was?...
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- Fall '09
- Math, #, Personal computer, DECLINE RATE, certain town, certain radioactive substance