A relation is not a function if a given input corresponds to two or more outputs.
Only selection B is a function, as it is the only one that doesn't have points one on top of another (same x, multiple y-values).
I'm slightly confused. Is it saying 500$ is part of her expense or the cap of which she doesn't want to go over?
I'm under the impression 3,722$ is her cap in she makes 3,722/month. If that is true she is well over and the payments are working.
To do this you need to multiply 1,800 by ten. you will get 18,000. Then you need to divide this by 1000 to get 18. 18 1000's will equal ten 1800
I don’t know what to put because there is no pdf or file attached