2. A small island has an abundance of insects and fruits which are food for an endangered species of mammal. A small group of the species is Introduced to the island including 10 adult females. The number of adult females on the island after t months is given by L N =- 1 + Ce 10 a. Given that there were 20 adult females on the on the island after 10 months, find L and C. b. Find the number of adult females on the island after 15 months. c. Find the time taken for the number of adult females to reach 40