Which algebraic expression is equivalent to this expression? {8x+15}+{8x-3} A. 23x - 5 B. 16x + 12 C. 31x - 3 D. 16x + 18

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?