Answer :

Given data:

The original cost is C=$35.

The sales tax is s=3.8%.

The final cost after sales tax is,

[tex]\begin{gathered} F=C(1+s) \\ =35(1+\frac{3.8}{100}) \\ =35(1.038) \\ =36.33 \end{gathered}[/tex]

Thus, the final cost after the sales tax is $36.33.

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