A warehouse storage building company must determine how many storage sheds of each size—large or small—to build in its new 8,000-square-foot facility to maximize rental income. Each large shed is 150 square feet in size, requires $1 per week in advertising, and rents for $60 per week. Each small shed is 50 square feet in size, requires $1 per week in advertising, and rents for $20 per week. The company has a weekly advertising budget of $100 and estimates that it can rent no more than 40 large sheds in any given week.