City officials use the given system of equations to estimate the population of two neighboring communities, where y is the population and x is the time, in years. y=10,000(1.01)^x
y=8,000(1.02)^x

use this system to complete the statement. after about (16 or 20 or 12 or 22) years, the population of each community will be approximately (18,270 or 12,400 or 16,200 or 11,300) people.