please work through these and show work and equations, I would really like to learn this process

14. Elevation 7,000, Inc. reported sales of $8,000,000 for the month and incurred variable expenses totaling $5,600,000 and fixed expenses totaling $1,440,000. The company has no beginning or ending inventories. A total of 80,000 units were purchased and sold last month. If sales increase by 200 units, how much should net income increase? a. $1,600 b. $19,200 C. $6,000 d. $10,000 15. Elevation 7,000, Inc. again: How many units would the company have to sell to achieve a desired profit of $1,200,000? a. 150,000 b. 88,000 c. 106,668 d. 100,000 16. Elevation 7,000, Inc. again: What is the company's break-even in units? a. 48,000 units b. 72,000 units C. 80,000 units d. O units 17. Elevation 7,000, Inc. again: What is the company's margin of safety in dollars? a. $2,400,000 b. $3,200,000 c. $480,000 d. $3,520,000 18. Elevation 7,000, Inc. again: What is the company's degree of operating leverage? a. 3.3 b. 2.5 jo