When can you use proportional reasoning to solve a problem? When two quantities add to 1
When one quantity is a constant multiple of the other
When the two quantities multiplied equal a constant
When one quantity is 1 more than the other

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?