Answer :
As given by the question
There are given that the blu-ray player costs is $115.99.
Now,
Sale tax is 4.5%
Then,
Total cost of blu-ray player is:
[tex]115.99+\frac{4.5}{100}\times115.99=115.99+0.045\times115.99[/tex]Then,
[tex]\begin{gathered} 115.99+0.045\times115.99=115.99+5.219 \\ =121.209 \end{gathered}[/tex]Hence, the total tax is