A. To calculate the total interest earned, we can use the formula for simple interest:
Interest = Principal * Rate * Time
In this case, the principal is $500, the rate is 3%, and the time is 2 years.
Interest = $500 * 0.03 * 2
Interest = $30
Isabelle will earn a total interest of $30.
B. To calculate the total amount in the account (including interest), we can add the interest earned to the principal amount:
Total Amount = Principal + Interest
Total Amount = $500 + $30
Total Amount = $530
The total amount in the account will be $530.