Answer:
For question 7a, James and Liu will NOT have the same amount of money saved.
Explanation:
Completing the table we have:
Deposit Balance in James' Balance in Liu's
0 300 200
1 30 40
2 30 40
3 30 40
4 30 40
5 30 40
6 30 40
7 30 40
8 30 40
9 30 40
10 30 40
11 30 40
12 30 40
660 680
Therefore, they won't be able to save up the same amount of money.
7b. The graghs representing James and Liu end as parallel graghs therefore the both of them will never be able to save the same amount.
(Using 50 units on the vertical axis and 1 unit on the horizontal axis)