Diagonals of parallelograms

Find the length of VW.

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great