Oliwia is opening a bank account. She learns that there is a special promotion where if she deposits $3,000 and then makes no additional deposits or withdrawals, her account will earn $3 in interest per month. Write the equation of a linear function that models the relationship between number of months and total amount of money Oliwia will have in her account.(1 point) Responses y=3x+1,000, where x is the number of months and y is the total amount of money Oliwia will have in her account. y equals 3 x plus 1,000 , where x is the number of months and y is the total amount of money Oliwia will have in her account. y=3,000x+3, where x is the number of months and y is the total amount of money Oliwia will have in her account. y equals 3,000 x plus 3 , where x is the number of months and y is the total amount of money Oliwia will have in her account. y=1,000x+3, where x is the number of months and y is the total amount of money Oliwia will have in her account. y equals 1,000 x plus 3 , where x is the number of months and y is the total amount of money Oliwia will have in her account. 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.

1 answer

To model the relationship between the number of months \( x \) and the total amount of money \( y \) in Oliwia's account, we start with the initial deposit and then account for the interest earned over time.

  1. Initial Deposit: Oliwia deposits $3,000. This is the starting point for the function.
  2. Interest Earned: The account earns $3 in interest each month. Therefore, after \( x \) months, the total interest earned will be \( 3x \).

The total amount of money in the account after \( x \) months can be expressed as:

\[ y = 3000 + 3x \]

This equation shows that the total amount \( y \) is the initial deposit of $3,000 plus the interest earned over \( x \) months.

Now, if we rearrange the equation to fit the standard form of a linear function, it becomes:

\[ y = 3x + 3000 \]

So, the correct equation that models the relationship between the number of months and the total amount of money Oliwia will have in her account is:

\[ y = 3x + 3000, \text{ where } x \text{ is the number of months and } y \text{ is the total amount of money.} \]

Thus, the correct response from the options given 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.