I need to get this done quickly there's no picture just a question when finding conditional frequency, how do you know if you should put the row total or column total in the denominator?

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?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Find the coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.