please solve A-D

(Operating leverage) The C. M. Cuarles Distributing Company manufactures an assortment of cold ac intake systems for high-performance engines. The average seling price for the various unta is $550. The associated variable cost is $350 per unit. Faxd cosis for the firm average $190,000 annually a. What is the break-even point in units for the company? b. What is the dollar sales volume the firm must achiove to reach the break-eved point? c. What is the degree of operating leverago for a production and sales level of 5.000 unts for the firm'? (Calculate to three decimal pisces.) d. What will be the projected eflect on eamings before interest and taxes if the firmis sales level thould increase by 40 percent from the yolume noted in part e