Write an expression for "n decreased by 3"

The coordinate grid shows points a through k. which points are solutions to the system of inequalities listed below? 2x+ ys 10 2x 4y < 8 oa c, d, k o e, f. g, j oa, c, d, h, k oe, f. g, h, j

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities