Final answer:
To find Fairbury's expected population in 2020 with a 1.97% yearly decrease, multiply 632,455 by 0.0197 to calculate a decrease of 12,459. After subtracting this from the initial population, the expected population is approximately 619,996.
Step-by-step explanation:
To calculate the expected population of Fairbury in 2020, given that its population is decreasing by about 1.97% each year, we can apply the percentage decrease to the 2019 population figure. To find the decreased population, we simply multiply the current population by the percentage reduction calculated as a decimal.
The calculation is as follows:
- Population decrease = 632,455 * 1.97% = 632,455 * 0.0197
- Population decrease = 12,459.36435
- Expected population in 2020 = Initial population - Decrease
- Expected population in 2020 = 632,455 - 12,459.36435
- Expected population in 2020 = 619,995.63565
Rounding this number to the nearest whole number, we get an expected population of 619,996 in 2020.