The cost price of the Play station 5 is = $499
The percentage of sale tax = 9%
So, the final cost price will be the sum of cost price of play station and the 9% of the cost price of play station
[tex]\begin{gathered} \text{ Final Cost of Play Station5 = 499+9\%of499} \\ \text{ Final Cost of Play Station5=499+}\frac{9\times499}{100} \\ \text{ Final Cost of Play Station5=499+}\frac{4491}{100} \\ \text{ Final Cost of Play Station5=499+44.91} \\ \text{ Final Cost of Play Station5=}543.91 \end{gathered}[/tex]So, the final cost price is $543.91
Answer : $543.91