7.91 = 8 21.9 = 22
8 + 22 = 30
Do you have answer choices for this question?
Answer: Adding 1 then adding 2
Step-by-step explanation: 1+1=2 2+2=4 etc
X1 + x2/2 , y1 = y2/2
xE + xF/2 , yE + yF/2
So it is C or D, becuase they are the same answer choices