A company has determined that a new product needs to have an average cost of production of $⁢12.75 per unit. To find the average cost of production, divide the cost to produce a certain number of units, x , by the number of units. The supplier has a setup fee of $⁢3,600 and a cost per unit of $⁢9.84 Complete the equation that can be used to find the number of units the company should order to achieve this average cost of production.