At an activity level of 9,100 machine-hours In a month, Curt Corporation's total variable production engineering cost is $765,310 and its total fixed production engineering cost is $224,070. What would be the total production engineering cost per machlne-hour, both fixed and variable, at an activity level of 9,700 machine-hours In a month? Assume that this level of activity is within the relevant range. (Do not round intermediate calculations.) O $10738 $107.20 O $106.31 O $106.85