This lesson is about Tangents, and they make no sense. Please help me.

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Laura read 1/8 of a comic book in 2 days. she reads the same number of pages every day. what part of the book does she read in a week