Suppose that a player bets on red or black. Half of the numbers from 1 to 36 are red, the rest are black. The player places a bet of $10 on red; if the ball stops on a red number, he receives his

$10 back plus $10 more. If the ball stops on a black number, the 0 or the 00 slot, he loses his bet. Find the player’s expected profit or loss from this game.