what are the slopes of each line?

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

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Is the number 128.439 a rational number