LS 30A - Final Exam With Questions with Answers LIFESCIENC 30A

Final Exam Last Name: First Name: Student ID: Signature: Instructions: Do not open this exam until instructed to do so. You will have three hours to complete the exam. Please print your name and student ID number above. You may not use books, notes, or any other material to help you. You may use a four-function or scientific calculator but not a graphing or programmable one. Please make sure your phone is your phone is silenced and stowed where you cannot see it. You may use any available space on the exam for scratch work, including the backs of the pages. If you need more scratch paper, please ask one of the proctors. Please do not write below this line. Problem Max Score 1 8 2 10 3 10 4 10 5 12 6 8 7 12 8 10 9 10 Total 90 1. (8 pts) In a population of tribbles, the per-capita birth rate is 0.9, and the immigration rate is 70 tribbles per day. Due to overcrowding, there is a per-capita emigration rate of 0.25, and the death rate is proportional to the square of the population size with a proportionality constant of 0.06. Write a differential equation to model this population. Be sure to identify what your variable(s) represen