I've never used the Google "Ask a Question" before.  I want to do some
research on a company whose stock I'm interested in adding to my 401K,
but I don't have the time due my work schedule and family.

Base on each case below, indicate what will happen to the direction of the
P/E ratio over the long term.  Also, if the change could have a two
directional effects on P/E, explain both. I'm NOT interested in the
immediate arithmetic effect of having the numerator or denominator
change.  I want the long-term effeect on the P/E ratio.
  a. ROE increases
  b. Debt to equity ratio increases
  c. Profitability on the company's plant and equipment increases
  d. The economy's rate of growth increases but int rates in the economy are 
     rising