Answer:
39 (the first option listed among the possible answers)
Step-by-step explanation:
Recall that the mean is the same as the average of the numbers you have listed, that is the addition of all divided by the number of entries you use:
mean = 
Therefore, rounding to the nearest integer, our answer s: 39
Answer:

Step-by-step explanation:







3(3-y)+1=31
9-3y+1=31
10-3y=31
-3y=31-10
-3y=21
y=-21/3 = -7
the solution is y=-7
A line that rises from left to right has a positive slope