we need to add the price of the shirt and the tax for this
the price is 11.50 and the tax is the price multiply by 0.075
so
[tex]\begin{gathered} 11.50+(11.50\times0.075) \\ 11.50+(0.8625) \\ =12.3625 \end{gathered}[/tex]rounding the answer the total price is $12.36