3<span>,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90</span>
To solve for m;
39 = 3m -12
39+12 = 3m -12 + 12 (add 12 to both sides)
51 = 3m
51 ÷ 3 = m
17 =m
m =17
Hope that helps, let me know if you don't understand something :D

The answer is the first one.
Hope this helps. - M
Answer:
(-3, 4)
Step-by-step explanation:
First, add 3 to point B's x coordinate:
-6 + 3 = -3
Then, add 1 to the y coordinate:
3 + 1
= 4
So, the coordinates of pre image point A are (-3, 4)