A smаll аirline uses twо meаsures оf activity, flights and passengers, in the cоst formulas in its budgets and performance reports. The cost formula for plane operating costs is $48,840 per month plus $2,381 per flight plus $7 per passenger. The company expected its activity in a normal month to be 63 flights and 293 passengers, but the actual activity was 61 flights and 298 passengers. The actual cost for plane operating costs was $199,070. The activity variance for plane operating costs for the month would be closest to: