Answer:
650
Step-by-step explanation:
822-72=650
Your thoughts are correct; Ned loses 14 points overall.
The reason the correctly answered questions do not factor into the answer is because that is not what the question is asking. Correct answers are not even mentioned :)
We're told x=-5 and y=11 and asked to evaluate a few expressions. That just means substitute these values into the expressions and compute the exact numerical answer.
Answer: 94
x to the power of 3

Answer: -125
•6y to the power of 2
Probably means

Answer: 726

Answer: 35
•(y-x) to the power of 2

Answer: 256