対前月比 売上 100,000 50,000 110,000 +10,000 +105% 事業貢献利益 30,000 20,000 32,000 +2,000 +10,000 110,000 32,000 0 20,000 40,000 60,000 80,000 100,000 120,000 1W 2W 3W 4W 売上 事業貢献利益 Forecast 9,083 17,100 0 5,000 10,000 15,000 20,000 25,000 30,000 0 5,000 10,000 15,000 20,000 25,000 30,000 売上1 固定費 総費用 損益分岐点 売上2