What is the largest number that can divide 35,50 and 40 exactly?

Answer pls man im trying to get out of summer school

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?

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?