HELLLP ME plz

1) The ratio of used books to all books is 6:14

2) The ratio of used books to new books is 6:8

a.) 3 used books : 7 books in all (3:7)
b.) 3 used books : 4 new books (3:4)

Explanation: a.) there are 6 used books and 14 total books. (6:14) simplified that ratio is (3:7)

b.) there are 6 used books and 8 new books. (6:8) simplified that ratio is (3:4)

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.