Plz help ToT I'm horrible at math

Shania's test scores in 8 subjects were 88, 91, 85, 74, 69, 72, 80, and 87. shania found the middle number of her scores. which type of measure did she find?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons