Exercise 1.4.13 Suppose that in addition to being turned off by Juliet's love, Romeo is turned off by his own love for her. Specifically, Romeo's love declines at a rate proportional to itself
with proportionality constant k. Write a model for the Romeo-Juliet system that adds in this
assumption.

The graph of the function f(x) = (x + 2)(x + 6) is shown below. which statement about the function is true? the function is positive for all real values of x where x > –4. the function is negative for all real values of x where –6 < x < –2. the function is positive for all real values of x where x < –6 or x > –3. the function is negative for all real values of x where x < –2.