With this i'm not sure how to answer it

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

The difference between tax advoidance and tax evasion

The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation