"find expressions for the mean and standard deviation of y if this variable is determined by the expression y

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is