Answer:
1 is B
2 is C
3 is D
4 is A
Explanation:
1: I used process of elimination. I'll show throughout the other three how 1 is B.
2: Money accumulates interest while it sits in the bank. This means the bank pays them a percentage of the money in their bank account (usually annually). With this said, if the money is never taken out, a mix of the bank's interest and adding money will make it slowly increase. C is a graph that slowly increases. So C is the correct answer (and B is wrong).
3: As with C; D slowly increases. But the difference is, D eventually drastically drops. This means money could have been taken out, and the question 3 wants to know what graph like is collecting money and then it is taken out. Since D looks like C except for a dip, this means D is correct (and B is wrong).
4: A is the only one that starts at a peak and end at its lowest point. The question 4 is asking about a bathtub that is filled to the brim and then is drained. With that said, A is correct (and B is wrong).
Hope this helps! Have a great day! :)