Z = -2/3a
divide by -2/3 on both sides
a = z divided by -2/3
a = -3/2z
The last set (choice D) is a subset of given set B.
The other 3 choices are wrong.
Answer:
Unless im being completely braindead right now there isn't a whole number that works with this. When simplified its 5/2 or 2.5 but because it isn't an actual whole number (like 2, 4 and 6) they don't count.
