Answer
\[\$2,520\]
Work Step by Step
Calculation of the simple interest can be done by multiplying the principal amount with the rate of interest and respective duration of time.
By using formula
\[\begin{align}
& \text{Simple interest}=\text{Principal amount}\times \text{Interest rate}\times \text{Time} \\
& =\$8,400\times0.05\times6\\&=\$2,520\end{align}\]
