Break-Even Analysis The Parents for Better Schools of Fresno, California, collected recipes from members and published a cookbook entitled Food for Everyone. The book will sell for $20 per copy. The chairwoman of the cookbook development committee estimated that the club needed to sell 800 books to break even on its $3,600 investment. What is the variable cost per unit assumed in the Parents for Better Schools' analysis? Round your answer to the nearest cent. $ per unit