Roger has the value function for gains and for losses, where2.5. He is offered a 50-50 gamble where he gets $3 if he wins and gets $0 if he loses. Calculate Roger's value of the gamble if he takes the best possible outcome (winning $3) as his reference point. (Round your answer to two decimal places, add a minus sign if your answer is negative, and don't add a dollar sign; e.g. -1.23)