Designers are working on a product that needs an average production cost of $⁢15.20 per unit. To find the average cost of producing an item, divide the cost to produce a certain number of units, x , by the number of units. The supplier has a setup fee of $⁢2,500 and a cost per unit of $⁢10.62 Complete the equation the designers can use to find the number of units to order to achieve this average production cost.