Answer:
If Sophie has $800 in a saving account that earns 5% interest per year and the interest is not compounded, then after one year she will have $840 in her account. This is because 5% of $800 is $40, and when we add this to the initial amount of $800, we get $840.
In general, if a saving account earns x% interest per year and the initial amount in the account is y dollars, then after one year the account will have y + (x/100) * y dollars. For example, if the interest rate is 5% and the initial amount is $800, then the final amount would be $800 + (5/100) * $800 = $840.
Explanation: