Answer: School AStep-by-step explanation: First check try to turn these numbers into their expanded form: School A: 30,000 + 8,000 + 400 + 90 + 2School B: 30,000 + 7000 + 500 + 30 + 6The thousands place is 8000 and 7000,Since 8000 is bigger than 7000, school A has a bigger population than school B.