The following costs were for Optimal View Inc., a contact lens manufacturer:

Output	Fixed Cost		Variable Cost		Total Costs
330	$	5,300	$	8,000	$	13,300
380		5,300		10,000		15,300
430		5,300		12,000		17,300
480		5,300		14,000		19,300

At an output level of 500 lenses, per unit total cost is projected to be: