Hi, can you help me to solve this please.

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

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

Find the values of y: 3y^3(y^2+ 2/3y)=0