Use the distributive property to remove the parenthesis 8(y-5)

Ok. So it will be 8y-40 Have any questions, just ask :)

The method to find the female dormitory is 2-d=800

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.