Answer:
Bar graph.
Step-by-step explanation:
Bar graphs can easily demonstrate the difference in amounts for many things, and can accurately illustrate the population for example. It will show a change and can demonstrate many populations all at once.
Hope this helps!
-AxekickNebulite
2 should be the correct one.
510000
6 years
10,000 = 22,400(0.88)^t