Marisa will hire x junior directors and y senior directors. Since she needs to hire at least 10 staff members, x+y≥10. Each junior director will be paid 640 per week, and each senior director will be paid \880 per week. Marisa’s budget for paying the new staff is no more than 9,700 per week; in terms of x and y, this condition is 640x+880y≤9,700. Since Marisa must hire at least 3 junior directors and at least 1 senior director, it follows that x ≥ 3 and y ≥ 1$. All four of these conditions are represented correctly in choice B.