Answer:
I believe this is correct, but I'm not a teacher or anything
Refraction
Refraction
Reflection
Refraction
Reflection
Reflection
Reflection
Answer:
C) 
The slope of the perpendicular line 
Step-by-step explanation:
<u><em>Explanation:-</em></u>
Given that the slope of the given line is

The slope of the perpendicular line
= 
The slope of the perpendicular line
= 
<u><em>Final answer</em></u>
The slope of the perpendicular line

Answer:
816 square feet
Step-by-step explanation:
13(16+20+12) + 16(12) = 816
-10 and -2
Because -10-2= -12 and -10 x -2 = 20
Hope this helps :)