Help me lease for a friend

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

If you could answer these your a life saver

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?