You must know the exchange rate when you travel to a different country because not all money is equal. The American dollar is not equivalent to a peso or a euro for example. You need to know the exchange rate so you get the same value of money that you give.
I believe it is C because I did this and I got a 100% on my test
Parallel because they both have no slope meaning the are both horizontal lines.
Answer:
22-2.25x
Step-by-step explanation: