How does energy bulb works

What is the standard form of -5x^2+2x^4-11+x^3+3x

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.