Can someone help pls?

Ineed with the quizzes in apex mathematics ii

Find the cocordinatse of the point on y axis which is nearest to the point (-2,5)

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 0.45, a standard deviation of 0.001, and margin of error of 0.5% a)0.44 b)0.46 c)0.45