Can someone please help me?

#24) I believe and expression to represent the number of pencils could be :
15(4) + 32(2) = x

Where the variable x represents the pencils.

#25) y = 18

In this case, when x = 6 and y = 12, y is equal to x times 2. We then apply this rule to when x = 9. 9 times 2 is 18.

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.

Hello!
volume of sphere =4/3.pi.r^3