Can someone me solve this ! i need to find what n equals!

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

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

How do i put 3(x+7) in distributive property