Factor 26r the power of 3 S + 52 r ^ 5 - 39 r ^ 2 s ^ 4 what is the resulting expression

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 angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?