Which is true of Pluto? A. Pluto has a moon that is about half it's size.
B. Pluto's orbit is shorter than than Saturn's.
C. Pluto orbits the sun every 2.5 earth years.
D. Pluto is only larger than Mercury.

d

Explanation:

Probably becuase it is further than Saturn

It takes like 70 years to go around the sun

And it is bigger than the moon

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west