# The exponential models describe the population of the indicated country. A, in m

The exponential models describe the population of the indicated country. A, in millions, t years after 2006. Which country has the greates growth rate? By what percentage is the population of that country increasing each year?
Country1: $A=129.3{e}^{0.001t}$
Country 2: $A=1096.9{e}^{0.011t}$
Country 3: $A=28.7{e}^{0.028t}$
Country 3: $A=147.9{e}^{-0.004t}$
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gotovub
We can solve it using exponential growth rate formula as below.
We have the exponential growth rate formula as
Final amount A=(principal value P)$×{e}^{\text{(rate of interes)(tome)}}$
so from the given data we can extract the rate of interest of country A=0.001
country B=0.011
country C=0.028
country D=-0.004
Here we can see the highest growth rate is 0.028, so its the 1st answer
again the percentage growth rate for this country would be $\frac{0.028}{100}=2.8\mathrm{%}$ per year
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