he marketing manager of Gibson Corporation has determined that a market exists for a telephone with a sales price of $23 per unit. The production manager estimates the annual fixed costs of producing between 41,100 and 80,400 telephones would be $574,000. Required Assume that Gibson desires to earn a $128,000 profit from the phone sales. How much can Gibson afford to spend on variable cost per unit if production and sales equal 46,800 phones