Use the distributive property to write an expression that is equivalent to 12 3 points + 4x.
12 + 4 + x
4(3 + x)
(3+x)4
2(6 + 2x)
3(4 + x)
6(2 + 2x)

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.