Solve the equation 7x=3^2-1
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Given:
Population is 2005 = 35,700
growth rate = 4% = 0.04
To find:
The population in 2030.
Solution:
The general exponential growth model is
where, a is initial value, r is growth rate and t is time in years.
Let the initial year is 2005. So, number of years between 2005 to 2030 is
Putting a=35,700, r=0.04 and t=25 in the above model.
Approximate the value to the nearest whole number.
Therefore, population of the district will be about 95,170.