The marketing manager of Rooney Corporation has determined that a market exists for a telephone with a sales price of $22 per unit. The production manager estimates the annual fixed costs of producing between 41,700 and 80,700 telephones would be $560,500. Required Assume that Rooney desires to earn a $134,000 profit from the phone sales. How much can Rooney afford to spend on variable cost per unit if production and sales equal 46,300 phones