Port Norris Textiles Corporation began September with a budget for 35,000 hours of production in the Weaving Department. The department has a full capacity of 47,000 hours under normal business conditions. The budgeted overhead at the planned volumes at the beginning of September was as follows: The actual factory overhead was $106,600 for September. The actual fixed factory overhead was as budgeted. During September, the Weaving Department had standard hours at actual production volume of 36,000 hours. Determine the variable factory overhead controllable variance and the fixed factory overhead volume variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number. Round your interim computations to the nearest cent, if required. a. Variable factory overhead controllable variance: $ b. Fixed factory overhead volume variance