Given:
Elena bought 8 tokens for $4.40
[tex]\begin{gathered} \text{Cost of a token=}\frac{4.40}{8} \\ \text{Cost of a token= \$0.55} \end{gathered}[/tex][tex]\begin{gathered} \text{Cost of 19 tokens=19}\times0.55 \\ \text{Cost of 19 tokens= \$10.45} \end{gathered}[/tex]