Use an annual growth rate of 1.4% in a 10 year period for a certain population to find the approximate doubling time and then predict the population in 2050, based on a 2000 population of 5.0 billion. What is the approximate doubling time? _____ years (Round to the nearest whole number as needed.) What will be the approximate population in 2050? _____ billion (Round to the nearest tenth as needed.)
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The formula for doubling time is T = 70 / r, where T is the doubling time and r is the growth rate. So, T = 70 / 1.4 = 50 years. Show more…
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