Answer:
The number of observations is 15.
12 ÷ 3= 4. Hope this helps. ;)
To do this we take the outlier off the parenthesis (the 4) and multiply it by the two numbers inside the parenthesis...
4*7 + 4*8
28+32
I can tell this activity is about graphing, but the writing is barely legible, can you re-upload the pictures or write it out?
$6 is 20% of a $30 haircut