Respuesta :
Answer:
21,070
Step-by-step explanation:
The standard form of number in words is numbers in count.
The population of Center City is given by: twenty one thousand seventy people
⇒ The population of Center City is: 21000 + 70 people
⇒ The population of Center City is: 21,070 people
Thus, Standard form of population of Center City is 21,070 people.