Does anyone know what this is?

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

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

Two lines parallel to the same plane are parallel to eachother