The population of the small city in the year 2020 using the given growth rate is; 51600 people
We are given that;
Population of the small city in the year 2010 = 36000
Population in the year 2015 = 43800
Now, we are told that the growth rate occurs at the same rate per year. Thus;
Population change from 2010 to 2015 = 43800 - 36000 = 7800
Thus, the population increases by 7800/5 = 1560 people each year.
General form of exponential function is; y = bˣ
where b is rate of growth while x is number of years
But here we will use sequence to get;
y(10) = 1560 * 10 = 15600
Thus;
Population in 2020 = 36000 + 15600 = 51600 people
Read more about Exponential growth rate at; https://brainly.com/question/27161222
#SPJ1