can someone help me answer this question

A proposed project has fixed costs of $45,000 per year. The operating cash flow at 7,000 units is $69,000 0. Ignoring the effect of taxes, what is the degree of operating leverage? b. If units sold tise from 7,000 to 7,300 , what will be the increase in operating cash flow? c. What is the new degree of operating leverage? b. If units sold rise from 7,000 to 7,300 , what will be the increase in operating cash flow? c. What is the new degree of operating leverage