Please help with these 2 questions for 15 points I think

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

Pls will give brainliest and all p. s u can zoom in if u cant see plss

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?