You have just been hired by FAB Corporation, the manufacturer of a revolutionary new garage door opening device. The president has

asked that you review the company's costing system and $"$do what you can to help us get better control of our manufacturing

overhead costs." You find that the company has never used a flexible budget, and you suggest that preparing such a budget would be

an excellent first step in overhead planning and control.

After much effort and analysis, you determined the following cost formulas and gathered the following actual cost data for March:

During March, the company worked $21,000$ machine$-$hours and produced $15,000$ units. The company had originally planned to work

$23,000$ machine$-$hours during March.

Required:

Calculate the activity variances for March.

Calculate the spending variances for March.