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Total Cost Concept of Product Pricing Voice Com, Inc, produces and selis cellular phones. The costs of producing and seling 4,500 units of cellular phones are as follows: Voice Com desires a profit equal to a 145l rate of return on invested assets of $637,200. Assume that Voice Com, Inc, uses the total cost concept of appiying the cost-plus approach to product pricing. a. Determine the total costs and the total cost amount per unit for the production and sale of 4,500 units of celiuiar phones. Round the cost per unit to two decimat b. Determine the totat cost markupp percentage (rounded to two decimal places) far cellular ghanes. His c. Determina the selling price of cellular phones. Aound to the nearest-cent. per phone