Four Smiley Faces Are Situated Along the X Axis as Follows

Multiple Choice

Four smiley faces are situated along the x axis as follows: m₁ = 5 kg at - 5.0 m, m₂ = 3 kg at - 2.0 m, m₃ = 3 kg at 1.0 m, and m₄ = 2 kg at 3.0 m. Where is the center of mass situated?

A) 3.1 m
B) 0.0 m
C) - 1.7 m
D) - 0.80 m
E) - 3.1 m