Answer :
Since 1 euro was worth about $1.11 dollars, then, the gasoline price in dollar per liter is:
[tex]\begin{gathered} 1.189euro\text{ per liter=1.189}\cdot1.11\text{ dollar per liter} \\ =1.31979\text{ dollar per liter.} \end{gathered}[/tex]Now, since 1gal=3.785L, we get that:
[tex]1L=\frac{1}{3.785}\text{gal.}[/tex]Therefore, the gasoline price in dollar per gallon is:
[tex]\begin{gathered} 1.31979\text{ dollar per liter}=1.31979\text{ dollar per}\frac{1}{3.785}gallon \\ =1.31979\cdot3.785\text{ dollar per gallon} \\ \approx4.995\text{ dollar per gallon} \\ \approx5.00\text{ dollar per gallon.} \end{gathered}[/tex]Answer: The gasoline price is 5.00 dollars per gallon.