Each visor requires a total of $4.00 in direct materials that includes an adjustable closure that the company purchases from a supplier at a cost of $1.50 each. Shadee wants to have 30 closures on hand on May 1, 20 closures on May 31, and 25 closures on June 30. Additionally, Shadees fixed manufacturing overhead is $1,000 per month, and variable manufacturing overhead is $1.25 per unit produced.