TB MC Qu. 1-245 (Static) Erkkila Incorporated reports that at an... Erkkila Incorporated reports that at an activity level of 2,100 machine-hours in a month, its total variable inspection cost is $69,846 and its total fixed inspection cost is $9,072. What would be the average fixed inspection cost per unit at an activity level of 2,400 machine-hours in a month? Assume that this level of activity is within the relevant range. Multiple Choice $37.58 Multiple Choice $37.58 $3.78 $4.32 $15.23