please just give me the clear answer what is the answer just tell me that, thank you.

Suppose the average number of vehicles arriving at the main gate of an amusement park is equal to 10 per minute. while the average number of vehicles being admitted through the gate per minute is equal to x. Then the average wailing time in minutes tor each vehicle at the gate is given by fix} = , where x > 10. x2 -1U)t in] Estimate the admittance rate it that results in an average wait of6 seconds. [b] If one attendant can serve 5 vehicles per minute, how many attendants are needed to keep the average wait time 6 seconds or less? in] Estimate the admittance rate x that results in an average wait. ofB seconds. The admittance is about vehicles per minute. (Round to the nearest tenth as needed.)