Kate is allowed to work no more than 20 hours a week. she has already worked 13 hours this week. at most, how many more hours can she work? write an inequality and solve.

Knowing Kate has worked 13 hours already, we write:
13
Knowing Kate can work no more than 20 hours a week, we write:
20 - 13 = 7
This represents the maximum amount of hours, 7, Kate can work the rest of the week. However, she may work less than 7 hours, we can represent this number with x, and thus we represent it as an inequality like so:
x ≤ 7 hours

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.