What is 42,100,000,000 million in scientific notation?

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?

Which of these would have been most likely to have been a carpetbagger during the reconstruction era? a) a new york businessman who relocated to mississippi b) a former slave who was able to buy land in birmingham c) a carolina-born politician who supported the democratic d) a former confederate officer who owned a farm in memphis eliminate

How is this equation completed? i cannot find any examples in the book.