three balls are selected simultaneously and randomly from a box. assume that the box contains 4 red balls and 5 green balls. also assume that each red ball selected pay $0.30, that each green ball selected pays $0.70, and that is costs $1.40 to play the game. a random variable x is defined to be the net payoff for a player. how many different values are possible for the random variable x.
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sum of total number balls divided by the sum of cost
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