HELP QUICK 19 POINTS

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

Does anyone know how to do geometryme with this problem

If g^-1(x) is the inverse of g (x) which statement must be true