5 A new rumor spreads within a company with 500 employees. The number of employees who have heard the rumor after #5 hours is given by 500 ' 1 -l 25 9-\"! N (l) (a) After how many hours is the rumor spreading most quickly? (h) Bonus question Approximately how many employees per hour are rst hearing the rumor at the time found in part (a)? ((3) [low many employees have heard the rumor at. the time found in part (a)