Answer:
pretty sure the middle is the not in the business class like where f and b meet
Where is the rest of the question?
Hey There!
Answer:
D. 28
Explanation:
So all you have to do in your answer is evaluate:
-(-28)
= 28
= D. 28
Therefore, that is how you found your answer.
Hope this Helps!

notice the equations in slope-intercept form, the first one has a slope of -1, the second one has a slope of 1.
if the slopes are equal, and the constant is different, they lines are parallel.
if the slopes are equal, and the constant is the same the equations are exactly the same thing, and the lines are coincident, on slapped on top of the other.
if the slopes differ, like here, then they have a solution, where they
intersect.
E= 116 joules
That is what I think the answer is