Anyone good at Geometry? I need help with this please. Thank you!

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?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

What is the slope of the line shown below?