Answer:
x-y
Step-by-step explanation:
when you subtract (-2x-8y)-(-3x-7y)
you have to distribute that negative onto -3x-7y which turns it positive
which results in -2x-8y+3x+7y
simplified to x-y
It was rotated clockwise around the orgin 180 degrees
Option 4
1017.88
V=πr2h=π·6^2·9≈ 1017.87602