Variable overhead cost variance.

1. Describe what the variable overhead cost variance determines for a company

and what it means if:

a) it is favorable

b) it is unfavorable

Reference if needed: Miller-Nobles, T. L., Mattison, B. L., & Matsumura, E. M. (2018).Horngren's accounting:The managerial chapters plus MyLab Accounting with Pearson eText(12th ed.). Pearson.

PLEASE ANSWER ALL 3 PARTS OF THE QUESTION. THANK YOU!!