Darryl plays a card game with his sister. he uses a 52 card deck and she chooses 1 card. if she chooses the 4 of hearts, she will win $ 10 and if she chooses any spade, she loses $ 2 . if any other card is drawn, they break even. what is the expected value for darryl's sister? round to the nearest cent. do not round until your final calculation.