What property is illustrated? (4•-7) •5 = 4 (-7•5)

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Shelly bought a house five years ago for $150,000 and obtained an 80% loan. now the home is worth $140,000 and her loan balance has been reduced by $12,000. what is shelly's current equity?

Asap 25 pts + brainliest to right/best answer only answer if you know for sure