Game 1 cost 3 dollars has a 0.4 chanve of winning 5 dollars a 0.2 chance of winning 10 dollars and a 0.5 chance of winning nothing. what is the expected value

Game 1 cost 3 dollars has a 0.4 chanve of winning 5 dollars a 0.2 chance of winning 10 dollars and a 0.5 chance of winning nothing. what is the expected value