Factor each polynomial completely
4x+12
bx-2x
x squared -6x+9
x squared -4x+4y squared
4a squared -9

Can somebody me out with this question

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

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score