Which situation has a unit rate of $7?
a
trevor spent $49 on 2 theater tickets.

b
sally bought a pack of 5 t-shirts for $35.

c
brandon bought 7 gallons of gas for $14.

d
gina bought nail polish for $5 and a pack of gum for $2.

No because if you do the higher number minus the lower number you will get a positive. if you do it the other way around you will get a negative number

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.