Inacio Corporation uses the weighted-average method in its process costing system. Data concerning the first processing department for the most recent month are listed below:

Beginning work in process inventory:
Units in beginning work in process inventory	800
Materials costs	$ 12,900
Conversion costs	$ 5,000
Percent complete with respect to materials	75%
Percent complete with respect to conversion	20%
Units started into production during the month	9,500
Units transferred to the next department during the month	8,400
Materials costs added during the month	$ 172,000
Conversion costs added during the month	$ 240,200
Ending work in process inventory:
Units in ending work in process inventory	1,900
Percent complete with respect to materials	90%
Percent complete with respect to conversion	30%

The cost per equivalent unit for materials for the month in the first processing department is closest to: