8c-3d is the correct answer
14/4 is simplified to 7/2 and as a mixed number it would be 3 1/2
To find the median you need to lay out all the answers by lowest to highest. Then, you’ll need to find the number that’s in the middle and that’s the median. However, if there’s 2 middle numbers you’ll need to add them then divide it by 2 and that’s the median.
Assuming CDB is a straight line then angle ADB = 180-82=98