Question 1 Initially, there are 10 crocodiles species A in a controlled river. After 6 months, the number of crocodiles increase to 12 . Assume the growth rate of crocodiles' population, P is directly proportional to the present population. a) Determine the expression of P(t) describing the population of crocodiles at any time t. (5 marks) b) What is the population of crocodiles species A after 2 years? (2 marks) c) How long would it take for the population of crocodiles to reach 30 ? (3 marks)