For which data set would the mean absolute deviation (MAD) be a good indicator of variation of the data?

Jason went to an arcade to play video games. he paid $2 for every 11 tokens he bought. he spent a total of $16 on tokens. which equation can be used to determine, t, the number lf tokens jason bought

Can anyone explain to me how to do this? anything will .

How do u write a function for the reflection across the y axis