Plz help similarity in right triangle

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m

How can constraints be used to model a real-world situation?