Help?

Picture below....

Question

Help? 






Picture below....

alyssajobug · Answer

attachment

alyssajobug · Answer

This one too

mathmale · Answer

Well, @alyssajobug , I see right away that we're dealing with INTEGER values of x ONLY.
"R" represents "real numbers," which certainly include fractions, and thus answers involving R must be eliminated.  That eliminates answers A and B.  I do not know for certain, but do guess that "W" represents "integers."
If I'm right, then which answer, C or D, do you think is the correct one?

alyssajobug · Answer

attachment

alyssajobug · Answer

R = Real
Q = Rational
Z = Interger
W = Whole

@mathmale

mathmale · Answer

Thanks for the reminder!  
A question for you:  does WHOLE mean the same thing as INTEGER?  At first glance, I believe so.

mathmale · Answer

If not, could you provide a counter-example?

alyssajobug · Answer

Whole are POSITIVE intergers @mathmale