Last question very confused on if answer is d answer as soon as possible

Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(−2, 8), b'(−5, 6), c'(−8, 8), d'(−4, 2).

Can someone me with these two circle theorem questions asap?

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319