This PowerPoint is a good introduction to re-enforce finding the output of single and double function machines.

https://corbettmaths.com/2017/09/25/function-machine/ This video tutorial may be helpful to support your learning of function machines this week. It looks at finding the input, function/rule and outputs. Look at the time that the video is playing for at the bottom and stop at 2 minutes!! Only the first 2 minutes are relevant to your level of learning! Click on this link to watch. EM.