angle triangle ABC , overline AB cong overline AC AB = y , AC = x m angle B=2x+20 , and m angle C=7y . Find y

Which transformations could be performed to show that aabc is similar to aa"b"c"? a reflection over the x-axis, then a dilation by a scale factor of 3 a reflection over the x-axis, then a dilation by a scale factor of 1/3 a 180° rotation about the origin, then a dilation by a scale factor of 3 a 180° rotation about the origin, then a dilation by a scale factor of 1/3