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Thanks so mcuh!

 Mar 7, 2018
edited by Guest  Mar 7, 2018
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a) Current population =P(c)

Future population =P(f)

P(f) =P(c) x e^(rt), where r= Rate of growth, t =Number of years.

70,000,000 = 35,000,000 x e(0.082t)  Divide both sides by 35,000,000

2 = e^0.082t     Take the natural log of both sides

t = ln(2) / 0.082

t =~ 8.45 - years for the population of the country to double.

 

b) e^.082 =1.0854558..... - 1 x 100 =~8.55% - the equivalent yearly rate of growth.

 Mar 7, 2018
edited by Guest  Mar 7, 2018

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