Please help me i really really need help.

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

If f(x)= 3x+6 which of the following is the inverse of f(x)

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.