5.Assume that the cost formula for one of a companys mixed expenses is $10,000 + $3.80 per unit. The companys planned level of activity was 2,000 units and its actual level of activity was 2,200 units. The actual amount of this expense was $18,200. The activity variance for this expense is:

6.Assume that the cost formula for one of a companys mixed expenses is $10,000 + $4.00 per unit. The companys planned level of activity was 2,000 units and its actual level of activity was 2,200 units. The actual amount of this expense was $18,150. The spending variance for this expense is:

7.Assume that a companys revenue in its flexible budget is $76,000. Its actual amount of revenue is $71,000 and the amount of revenue in the companys planning budget is $78,000. The amount of the revenue variance is: