Answer:
right the box in the corner means it's a 90 degree angle or a right angle
the Answer is (B) change in y/ change in x
Step-by-step explanation:
:DD
What do you mean by that?
Answer: n-3, n-2, 180, and 180(n-2)
Distribute the parenthesis
Add 20 to both sides
Divide both sides by 2
Hope this helps