Explanation:
A. As the population of the beaver represents a certain law along with the year.
B. The point Q labels that 3.5 years after 1995 the amount of beaver has grown up to 475 approximately.
C. According to the question, the population is grown exponentially.
p(t) pass through point ( 1, 100), (2, 200), ( 3, 400), ( 4, 800)
therefore, 200 = 100 x 2 = 100 x 2 ^1 = 100 x 2^ 2-1
400 = 100 x 4 = 100 x 2 ^2 = 100 x 2^ 3-1
800 = 100 x 8 = 100 x 2 ^3 = 100 x 2^ 4-1
Answer = p (t) 100 . 2 ^ t-1