The rabbit population on a small island is observed to be given by the function
P(t) = 140t − 0.3t4 + 1000
where t is the time (in months) since observations of the island began.
(a) When is the maximum population attained (Round your answer to one decimal place.)
___________months.
(b) When does the rabbit population disappear from the island? (Round your answer to one decimal place.)
___________ months.
