I need help on this and if you answer this correctly then I give you a BRANLIST​

If f(x)=x+7 and g(x)=1/x what is (fog)(x)

Find all the angles that satisfy the equation cos(θ)=32

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?