Free points

(enjoy, lol)

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

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.