Astudent compared the amount (in dollars) they spent on books each week. the box plot shows the results. the median amount they spent the difference of the frist and third quartiles of the data set is

Need on this one asap im almost done with this subject

Can someone me with my math problem pls my teacher is on my back about this

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.