How is dividing fractions related to multiplying

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?

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?