I'd really appreciate it if you could answer 19-23. thanks!!

19. Which of the following mathematical expressions is found in a typical flexible budget formula for overhead? a) Total activity units + budgeted fixed overhead cost per unit. b) Budgeted variable overhead cost per unit + budoeted fixed overhead cost. c) (Budgeted variable overhead cost per unit total activity units) + budgeted fixed overhead costs d) (Budgeted fixed overhead cost per unit * total activity units) + (budgeted variable overhead cost per unit * total activity units). 20. Pat Walker Medical Clinic measures its activity in terms of patient visits Last month, the budgeted level of activity was 1.060 patient visits and the actual level of activity was 1.050 patient visits. The cost formula for administrative expenses is $3.00 per patient visit plus $17.000 per month. The actual administrative expense was $19,300. In the clinic's flexible budoet performance report for last month, the spending variance for administrative expenses was A) $850 F B) $220 U C) $30 F D) $880 F 21. Hoppy Corporation compares monthly operating results to a static budget prepared at the beginning of the month. When the actual level of activity is less than budgeted, which of the following would be true? A) Variable costs would show favorable variances B) Variable costs would show unfavorable variances C) Fixed costs would show favorable variances D) Fixed costs would show unfavorable variances 22. Use the following information to calculate direct labor efficiency variance. State whether the variance is favorable or unfavorable Standard Rate Per Hour of Direct Labor $18 Standard Direct Labor Hours Required Per Unit Actual Units Produced During the Period 620 Actual Direct Labor Hours Used During the Period 0.2 130 A) 210 U B) 210 F C) 108 U D) 108 F 23. XYZ has forecast sales for the next three months as follows: January 10,000 units: February, 15,000 units, and March, 20,000 units. Inventory as of January 1 is expected to be 2,000 units Ending inventories should equal 25% of the coming month's sales needs. How many units should be produced in February a. 13,750 units b. 15,000 units C. 16,250 units d. 18.000 units e. none of the above