Erkkila Inc. reports that at an activity level of 7,000 machine-hours In a month, its total varlable Inspectlon cost Is $424, 580 and Its total fixed Inspection cost Is $179, 142. What would be the average fixed Inspection cost per unit at an activity level of 7, 300 machine-hours In a month? Assume that this level of activity Is within the relevant range. $24.54 $86.25 $25.59 $35.06