Answer:
3
Step-by-step explanation:
To find the median, first we have to put the data in ascending order:
1, 2, 3, 3, 5, 11, 12
The median is the middle number. In this case, that is 3.
2^2-28
=4-28
=-24
that is it
Logically, the answer is either 12 or 42
