The Junior League of Yadkinville, California, colected recipes from members and published a cookbook entitled Food for Everyone. The book will sell for $30 per copy. The chairwoman of the ceokbook development committee estimated that the club needed to sell 12,400 books to break even on its $136,400 investment what is the variable cost per unit assumed in the Junior Leaque's s?(Round your answer bo the nearest whole number) ser un Previous Net