I need help on the second part of the question, I know it's subtraction and that you gotta subtract the largest number to the smallest number but I forgot how to do it and the answer that's chosen above is correct so don't worry about that one but ya please help me

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?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.