can you help me to double check my answers for this text book practice

Bovine Company, a wholesale distributor of umbrellas, has been experlencing losses for some time, as shown by its most recent monthly contribution format income statement: In an effort to Isolate the problem, the president has asked for an Income statement segmented by geographic market. Accord ingly, the Accounting Department has developed the following: Regtifed: 1. Prepare a contribution fommat income statement segmented by geographic market, as requested by the president. 2-a. The company's sales manager belleves that sales in the central geographic market couid be increased by 10s if monthly advertising is increased by $41,000. Caiculate the incremental net operating income. 2-b. Would you recommend the Increased advertising? Yes No