To model the total amount of money Oliwia has in her account as a linear function of the number of months, we can start with the initial deposit and add the interest earned each month.
- Oliwia deposits $3,000 initially.
- She earns $3 in interest for each month that passes.
Let \( x \) be the number of months, and \( y \) be the total amount of money in the account after \( x \) months.
The total amount in the account can be expressed as:
\[ y = \text{initial deposit} + \text{interest per month} \times \text{number of months} \]
Putting in the values:
\[ y = 3000 + 3x \]
So the correct equation that models this situation is:
\[ y = 3x + 3000 \]
Therefore, the correct answer is:
y = 3x + 3,000, where x is the number of months and y is the total amount of money Oliwia will have in her account.