Answer: D. None of the above
midpoint formula : (x2-x1) , (y2-y1)
(8-11)/2 , (7-9)/2
-1.5 , -1
<u>Answer-</u>
The average U.S. public debt per American is approximately $29,400
<u>Solution-</u>
Given in the question,
U.S public debt as of October 2010 = $9.06×10¹²
Population of U.S in 2010 = 3.08×10⁸
We have to calculate the average U.S. public debt per American,

Therefore, the average U.S. public debt per American is $29,400 (after rounding off)