Discover Questions

Is selenium is conductive? Do babies ever cry when they are being aborted?? If f (x)=ax^(2)+bx+c And f (x-1)+f (x)+f (x+1)=x^(2)+1 find f (2)?
I am new to function and I don't know how to solve such questions? Distance in kilometers. Light travels in one year at the rate of 186,000m/s. To the nearest star if from earth its 4.3 light years away? Where or who can I sell my ufo video?