Answer:
B. $14352.08
Explanation:
Let us find cost of item after 7.2% of sales tax. The cost of item after 7.2% of sales tax will be equal to 15640 plus 7.2% of 15640.
![\text{The cost of item after sales tax}=15640+((7.2)/(100)* 15640)](https://img.qammunity.org/2019/formulas/mathematics/high-school/qqlfjnd6o01dvnzqhl0gr9c0rpxgz1so9l.png)
Therefore the cost of item after 7.2% of sales tax will be $16766.08.
Now let us add registration fee to the cost of item.
![\text{The cost of item after registration fee}=16766.08+86](https://img.qammunity.org/2019/formulas/mathematics/high-school/dmkzh0qqet3wtaz5kieeqrql02psozrbnq.png)
Now let us subtract $2500 trade allowance to find the total cost of the item.
Therefore, the total cost of item will be $14352.08 and option B is the correct choice.