Find the midpoint and distance of the line segment AB connecting the two points: A(-2.5, 4) and B(5.5, 6)

How many glue sticks are in a basket containing 96 scissors, if the ratio of glue sticks to scissors is 19 to 57.

How to do this , and can some one explain

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8