What is the standard form of this number 15,000+7000+400+9

The answer would be 22409. Hope this helps!

Twenty-two thousand four hundred and nine is your answer

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.

Just turn the whole gym into pie