Which sentence has a verb in the passive voice?

Someone answer this asap for an office manger uses the function s(x) to determine the number of shirts the company can make when the employees work for a total of x hours. when the employees have worked for a total of 300 hours, they produces 500 shirts. which equation correctly represents the company’s production of shirts? a. s(300) = 500 b. s(300) = 800 c. s(500) = 300 d. s(500) = 800