What is a unit rate that describes the exchange?

To find the unit rate of euros per dollar, we divide the number of euros by the number of dollars:

[

text{Unit Rate} = frac{text{Euros}}{text{Dollars}} = frac{450 text{ euros}}{600 text{ dollars}}

]

Now, simplify this fraction:

[

frac{450}{600} = frac{450 div 150}{600 div 150} = frac{3}{4}

]

This means you get 0.75 euros for every dollar exchanged. Therefore, the correct answer is:

0.75 euros per dollar.

This unit rate helps you understand how many euros you would receive for a single dollar. Great job working through this! If you have more questions or need further assistance, feel free to ask!