of the three separate cases below. 1. The 12,500 units produced and sold increases to 13,000 units and fixed costs increase by $5 , 400 . 2. Unit selling price decreases by 3% and units produced and sold increase by 8% . Hint: A unit increase has both a sales and costs impact. 3. Fixed costs increase by $10 , 500 , variable costs per unit decrease by $1 , and units produced and sold increase by 400