Assume that a company provided the following cost formulas for three of its expenses (where q refers to the number of hours worked): Rent (fixed) Supplies (variable) Utilities (mixed) $ 3,000 $ 4.00q $150 + $0.75q The company's planned level of activity was 2,000 hours and its actual level of activity was 1,945 hours. The actual amount of supplies expense for the period was $7,800. What is the activity variance for supplies expense?

The company's pianned level of activity was 2,000 hours and its actual level of activity was 1,945 hours, The actual omount of supplies expense for the period wis $7800 What th the octivity vartance for suppties expense