Well, it depends on what the weight of the test is. Most courses tell you that a test is worth a certain percentage of your grade(i.e. Final Exam is worth 20% of your entire grade). It also depends on what your grades for other assignments were, and how many there were. Try asking your teacher.
The average of your previous grade and the grade you got on your test is 84.5%. Average is the mean, which is calculated by: (91 + 78)/2.
To solve this absolute value equation, we can use find the solutions as follows taking into account the definition of absolute value, then, we have:

Now, we can solve both equations to find the solution(s):
First case:

Second case:

Then, both solutions are the same, because of the absolute rule (this is the point when y = 0, that is the x-intercept for this function.)
Therefore, the solution set is {19/20}.
The answer would be 778000.
Find the number in the thousand place
8 and look one place to the right for the rounding digit
3. Round up if this number is greater than or equal to
5 and round down if it is less than 5.
778000
I think it is D, because the negative would turn positive and move to the right but im not 100% sure
Nearest hundred
63600 - 41600 = 22000
hope this helps