What is 3x-6+7y-4y pl hel meeere

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

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Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180