Answer:
$4305
Explanation:
At the end of the year, Bobby will have earned interest on his deposit of $4200. The interest rate is 2.5%, which can be written as a decimal as 0.025. To calculate the amount of interest earned, we can multiply the deposit amount by the interest rate:
Interest earned = $4200 x 0.025 = $105
Therefore, at the end of the year, Bobby will have his initial deposit of $4200 plus the interest earned of $105, for a total of:
$4200 + $105 = $4305
So Bobby will have $4305 in the bank at the end of the year.