What is the area of the figure below? 20 square units
12.5 square units
21.5 square units
21 square units

Trigonometry hellllllpppppppp asap

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

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.