Domain and range from the graph of a continuous function 

I cannot thank you enough for your videos. They have proven to be very, very helpful. Thank you so much - your work does not go unnoticed.

How do you know which brackets to use

As much as I appreciate you for being helpful in my Aleks class, the class just doesn’t like any of the methods or answers that you come up with I don’t know if it’s just built different, or if the class itself is broken