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the beginning of 1975 the population of a country was 40 million and growing at a rate of 3% per year. Assume that the growth is exponential. Estimate the population of the country at the beginning of the year 2010
 one year ago
 one year ago
the beginning of 1975 the population of a country was 40 million and growing at a rate of 3% per year. Assume that the growth is exponential. Estimate the population of the country at the beginning of the year 2010
 one year ago
 one year ago

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me123456789Best ResponseYou've already chosen the best response.0
im sorry and how did you get this?
 one year ago

mubzzBest ResponseYou've already chosen the best response.0
This can be taken as a geometric progression where the population at any given year is given by \[ar ^{n1}\] where a is starting population and 'r' in this case is 1.03 as the population is increasing. Now count the years, from 1975 to 2010, 35 years. So you use formula population = \[40000000\times1.03^{35}\] population approx 112 million
 one year ago

me123456789Best ResponseYou've already chosen the best response.0
i got 83751117 how did you get 112 mil?
 one year ago

mubzzBest ResponseYou've already chosen the best response.0
how did you get that? Because I've used exponential population growth method and geometric progression and got the same answer
 one year ago

me123456789Best ResponseYou've already chosen the best response.0
ok i rechecked it ant got 1.05 and the answer was 135mil
 one year ago

mubzzBest ResponseYou've already chosen the best response.0
ok let me g through it again. two mins :)
 one year ago

me123456789Best ResponseYou've already chosen the best response.0
40000000*1.05^24 was 129003997.7
 one year ago

mubzzBest ResponseYou've already chosen the best response.0
it can't be 1.05 as you gave the growth rate to be 3% If it is 5%, then you get 40(1.05)^35 = 220 million Check your question again. You get 135 million if the growth rate is 5% and the time period is 1975 to 2000
 one year ago

me123456789Best ResponseYou've already chosen the best response.0
yeah the years are 1975 to 2010
 one year ago

me123456789Best ResponseYou've already chosen the best response.0
can you help me with this one?
 one year ago

me123456789Best ResponseYou've already chosen the best response.0
If the population of bacteria doubles in 4 hours how long will it take for it to triple its original size
 one year ago
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