Each week samantha can pay as much as $15 for her school lunch. write an inequality showing how much samantha spends on lunch.

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?

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.