A group of figures is shown which of these does NOT apppear to be a rectangle, a pentagon, a parallelogram, or a trapezoid

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?

Sorry guys but as you have a small brain

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?