Write
(25^3)^4
as a power of 5.

Select the two pairs of figures that are similar.

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

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?