users are useless, they really don't help. At this point, I can't tell if this a helping website or an off-brand version of tinder smh

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

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?

On average, a continental shelf drops 0.12 m per 100 m. at 22.5 m from the shoreline, how much distance has the continental shelf dropped?