1. the 2010 census reported about 308.7 million people in the united states. the 2000 census reported a population of about 281.4 million. by about what percent did the population change? did the population grow or shrink?

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?