Answer:
0
Step-by-step explanation:
Just 4 people per year would overflow the landfill, how would it survive 6480 people?
Answer: D, neither A nor B
Step-by-step explanation: In a function, the x (the input) cannot repeat in the given set of ordered pairs. In Set A, 2 repeats in the third and fourth ordered pairs. In Set B, 9 repeats in the third and fourth ordered pairs as well.