Im completely lost on what formulas are needed for this

13-48 Overhead Variances Study Appendix 13. Consider the following data for the Hamlin Company: Factory Overhead Fixed Variable Actual incurred $12,800 $14,400 Budget for standard hours allowed for output achieved 12,000 10,200 Applied 11,800 10,200 Budget for actual hours of input 12,000 10,800 From the preceding information, fill in the following blanks. Be sure to mark your variances F for favorable and U for unfavorable. a. Flexible-budget variance $ Fixed EA Variable CA b. Production-volume variance $ Fixed EA Variable $ c. Spending variance $ Fixed tA Variable $ d. Efficiency variance $ Fixed $ Variable $