Please help me I'm so bad at math and doing AFDA really doesn't help.. find a, b, c in this equation, much appreciated!

The highest common factor of 132 and 220

This is different from the first one can someone me

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).