Answer:
Min 80, Q1 82, Med. 85.5, Q3 93, Max 100.
90%.
Step-by-step explanation:
Percentage at least 82 = 100 *(100 - 82) / (100-80)
= 90%.
The slope of the line formula:

Next, you would have to plug in the coordinates.

Now, all you would have to do is solve and simplify it.

=

=
The slope would be 
.
I hope this helps!
Answer:
I think it's B
Step-by-step explanation:
Your overall grade will go down. I'd try to ask your teacher if you can make them up.
Answer: angle B will be 90°
Sum of the angles = 180°