Smart Stream Inc. produces and sells cell phones. The costs of producing and selling 9,000 units of cell phones are as follows: Variable costs: Fixed costs: Direct materials $ 90 per unit Factory overhead $517,500 Direct labor 41 Selling and admin. exp. 181,800 Factory overhead 27 Selling and admin. exp. 22 Total variable cost per unit $180 per unit Smart Stream Inc. desires a profit equal to a 15% rate of return on invested assets of $630,000. Assume that Smart Stream Inc. uses the variable cost method of applying the cost-plus approach to product pricing. a. Determine the variable costs and the variable cost amount per unit for the production and sale of 9,000 units of cellular phones. Total variable cost $ Variable cost amount per unit $ b. Determine the variable cost markup percentage for cellular phones. % c. Determine the selling price of cellular phones. Round to the nearest cent. $ per cellular phone