Find the selling price.

cost to store: $75

markup: 20%

90 I think because 20%=0.2

and 75x0.2= 15

75+15=90

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.