11. [W1 Points] DETAILS PREVIOUS ANSWERS WANEFMACT11.5.101. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A u epidemic described approximately followed the curve P - 160 million people 1 + lemme\"33' ' where P is the number of people infected and f is the number of weeks after the start of the epidemic. How fast is the epidemic growing (that is, how many new cases are there each week} after 20 weeks? After 30 weeks? After 40 weeks? {Round your answers to two signicant digits.) after 20 weeks x cases per week after 30 weeks 33.?5 x cases per week after 40 weeks 155.40 K cases per week