Which of the following expressions is equivalent to the expression below?
4(5x + 2 - x)

a. 16x + 2
b. 16x + 8
c. 20x + 1
d. 20x + 4

The first thing we have to do is simplify the first equation by using the distributive property

4(5x)+4(2)+4(-x)

and that simplifies to 20x+8-4x
combine like terms 
16x+8

Aperecent is the 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.