I already solved part a and part b. can you please solve part c and include your work? please check if my answer for part a and part b are correct please?

Cost-Volume Profit Analysis Hailstorm Company sells a single product for $22 per unit. Variable costs are $14 per unit and fixed costs are $45,000 at an operating level of 7,000 to 12,000 units. a. What is Hailstorm Company's break-even point in units? 5,625 units b. How many units must be sold to earn $12,000 before income tax? 7,125 units c. How many units must be sold to earn $13,000 after income tax, assuming a 35% tax rate? 0 units