Me. i need to answer this asap. i will love you forever omg. okay so the question is - keith is racing this little sister pattie and has given her a 15 foot head start. she runs 5 ft/sec and he is chasing at 8ft/sec. for how long can pattie stay ahead of keith?

Keith runs (8 - 5) = 3 ft per sec faster than Pattie, so every second he gets 3 ft closer to her. If they do that for (15/3) = 5 seconds, he'll catch up to her.

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.