algebra

A biologist studied the populations of white-sided jackrabbits and black-tailed jackrabbits over a 5-year period. He modeled the populations, in thousands, with the following polynomials where 𝑥 is time, in years.
White-sided jackrabbits: 6.5𝑥^2 − 8.7𝑥 + 5.9
Black-sided jackrabbits: 6.5𝑥^2 + 9.2𝑥 + 1.2
What polynomial models the total number of white-sided and black-sided jackrabbits?

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  1. 6.5𝑥^2 − 8.7𝑥 + 5.9 + 6.5𝑥^2 + 9.2𝑥 + 1.2
    = (6.5+6.5) x^2 + (9.2-8.7) x +(5.9+1.2)

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