Question

You put some money in a bank account one year ago.

You have not done anything with it since.
The bank takes out a low balance fee of $0.25 each month.
After 8 months, you had $28 in the account.

Choose the equation that best shows the money in your bank account over time.

Answer 1

Answer: 28-2=26

Step-by-step explanation: 0.25 x 8 = $2 which means your just subtracting 2 dollars from 28.

Answer 2

y = -0.25x + 30

Explanation:

8 × $0.25 = $2

After 8 months, with a $0.25 fee per month, your balance decreased by $2. Now it is $28.

That means it started at $28 + $2 = $30.

For the function, the initial value is $30.

The rate of change is -0.25 per month.

y = -0.25x + 30

where

x = number of months since the initial deposit

y = balance after x months