I just need to know how to do exponential growth the equations for it are A=P(1+r)^nA1/A0-1

The table is shown below:
MONTH SAVINGS
0 900
1 940
2 980
3 1020
4 1060
5 1100
6 1140
7 1180
8 1220
9 1260
10 1300
11 1340
12 1380
Explanation:Given that Tyler starts with a deposit of $900, with an addition of $40 every month, $40 is added to the preceding amount until the last month, we have the table as:
MONTH SAVINGS
0 900
1 940
2 980
3 1020
4 1060
5 1100
6 1140
7 1180
8 1220
9 1260
10 1300
11 1340
12 1380