The Following Table Shows the Per-Person Carbon Dioxide Emissions for the United

Multiple Choice

The following table shows the per-person carbon dioxide emissions for the United States and for the rest of the world over six years.
$\begin{array} { c c } \text { Non-U.S. } & \text { U.S. } \\4.2 & 18 \\3.8 & 17.5 \\4 & 17 \\3 & 18.6 \\3.9 & 17.5 \\3.8 & 16.5\end{array}$
The least-squares regression equation is $y = 20.9878 - 0.9175 x$ . If the non-U.S. emissions differ by 0.5 From one year to the next, by how much would you predict the U.S. emissions to differ?

A) -0.92
B) 0.46
C) -1.83
D) -0.46