Answer:
C
Step-by-step explanation:
3*-4
Are you asking about the percent of change?if so the answer is 33.3%.
You should be able to multiply 91 by 8 to get the sum of the first 8 tests, then add the score on the 9th test. Then to get the average of the sum of the 9 tests you need to divide it by 9.
((91*8)+78)/9=89.555555555555.... So, 90%
Answer:
slope -6/5
Step-by-step explanation:
Answer:
Step-by-step explanation:
If we have two coordinates on a line (x1,y1 =1,2) and (x2, y2 =3,6) we can solve for m as follows. (x2,y2) 6=m3+c - (x1,y1) 2=m1+c
