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  3. 4. the doubling time for a city's population is 10

4. The doubling time for a city's population is 10 years. In 30 years the...

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4. The doubling time for a city's population is 10 years. In 30 years the population will be times the initial populationa) 2b) 3c) 4d) 85. Which of the following is not a good approximation of doubling time?a) A population growing at 2% per year will double in 35 years.b) A population growing at 1% per year will double in 70 years.c) A population growing at 10% per year will double in 7 years.d) A population growing at 35% per year will double in 2 years.6. The half-life of a drug in the bloodstream is 14 hours. What fraction of the original dose is left in the bloodstream after 56 hours?a) 1/4b) 1/8c) 1/16d) 1/32

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