Final answer:
The approximate amount of equal payments that Alexandra deposited at the beginning of every 3 months is $500.
Step-by-step explanation:
The approximate amount of equal payments that Alexandra deposited at the beginning of every 3 months is $500. We can determine this by analyzing the given table:
- Alexandra deposited $1,000 at the beginning of the first 3 months.
- For the second 3 months, she deposited $1,200, which is an increase of $200.
- For the third 3 months, she deposited $1,500, which is again an increase of $300.
From this pattern, we can conclude that Alexandra is increasing her deposits by $200 every 3 months. Therefore, her initial deposit must be $500.