11. [-I3 Points] The rate, r, at which people get sick during an epidemic of the flu can be approximated by r = 1200te\"'5', where r is measured in people/day and t is measured in days since the start of the epidemic. (a) sketch a graph of r as a function of t. r r 1000 1000 800 800 600 600 400 400 200 200 t I 2 4 6 s 10 O 2 4 6 8 10 r r 1000 1000 800 800 600 600 400 400 200 200 t t O 2 4 6 8 10 O 2 4 6 8 10 (b) When are people getting sick fastest? t = (c) How many people get sick altogether? people