Consider a zero-sum game. What is the expected payoff for both players (player 1 has strategiesx1,x2,x3,x4

player 2 has strategiesy1,y2,y3,y4), if they use the following mixed strategies: player 1 uses mixed strategy (0.25,0,0.5,0.25),player 2 uses mixed strategy(0.5,0,0.5,0), if the payoff matrix of player 2 is:

y1 12 y3 94 C1 2 -2 -5 - 4 8 -3 -2 -8 12