Magnification at a Different Distance from Mirror?

[DaveMann]

Homework Statement

The focal length between a person and his mirror that produces a magnification of 1.50 when his face is 12.0 cm away is 0.36 m. He then moves to a distance of 3.7 times the focal length away from her mirror. What is the magnification now?

Homework Equations

di/do=m
1/f=1/di+1/do

The Attempt at a Solution

I've been trying to work this out on paper for the last hour. When his distance is 2.6 times the focal length, the magnification is -0.62. I can't figure out why that is though. There seems to be 2 variables.

 

[ehild]

The images can be real and virtual. One image is upside down, which one? What is the sign of magnification in case of a real image and in case of a virtual image?