There are basically three steps to follow to analyze any mirror problem, which generally means determining where the image of an object is located, and determining what kind of image it is (real or virtual, upright or inverted).

• Step 1 - Draw a ray diagram. The more careful you are in constructing this, the better idea you'll have of where the image is.
  
• Step 2 - Apply the mirror equation to determine the image distance. (Or to find the object distance, or the focal length, depending on what is given.)
  
• Step 3 - Make sure steps 1 and 2 are consistent with each other.