Can someone please help

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?

What does x = in this equation x+3+2x=x+5

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane