Communication (6 marks) Show your work for full marks. The population of rabbits in a controlled system can be described by the function P(x) - -x + 18x + 19, where r is the number of years after the population was first tracked. What is the meaning of P'(x) in this situation? P'(11) - -4. Explain what this means. 2. List and describe the two methods for determining the derivative of /(x) - (x + x- 1)(x + 8)? 21 3. Name one example of how the derivative is useful in everyday applications. 4 For which values of x is f (x) = 0