PLS SOME1 HELP ME RN PLEASE

When can u say there is no solution for a system of linear inequalities? explain your answer and show with a system and graph

Of four points are collinear, they are also coplanar

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit