6.Two librarians, Robert and Patricia, cataloged a combined total of 180 new books, each of which was cataloged by only one of the two librarians. Although they spent the same amount of time cataloging their books, Robert spent an average of 15 minutes per book whereas Patricia spent an average of 12 minutes per book. Quantity X: The number of books cataloged by Robert; Quantity Y: 60 * Quantity X is greater. Quantity Y is greater. The two quantities are equal. The relationship cannot be determined from the information given. 7.In the xy-plane, a quadrilateral has vertices at (-1, 4), (7, 4), (7, -5), and (-1, -5). What is the perimeter of the quadrilateral? O 17 O 18 O 19 32 O 34