The correct expression to convert the 22 AUD into USD is option A.
Given that the value of 1 US dollar is equal to the value of 2 Australian dollars. We can write this as given below.
1 USD = 2 AUD
1 AUD = 1/2 USD
The 22 Australian dollars can be converted as,
[tex]22 \;\rm AUD = \dfrac {1}{2}\times 22 \;\rm USD[/tex]
Hence the correct expression to convert the 22 AUD into USD is option A.
To know more, follow the link given below.
https://brainly.com/question/19943359.