A biologist studied the populations of white-sided jackrabbits and black-tailed jackrabbits over a 5-year period. The biologist modeled the populations, in thousands, with the following polynomials where x is time, in years.
white-sided jackrabbits: 5.5x² - 9.2x + 6.9
black-tailed jackrabbits: 5.5x² + 9.9x + 1.3
What polynomial models the total number of white-sided and black-tailed jackrabbits?
11x² + 0.7x + 8.2
11x² - 0.7x + 8.2
11x² - 0.7x - 8.2
-11x² + 0.7x - 8.2
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