A biologist studied the populations of common guppies and Endler’s guppies over a 6-year period. The biologist modeled the populations, in tens of thousands, with the following polynomials where x is time, in years.
common guppies: 3.1x2 + 6x + 0.3
Endler’s guppies: 4.2x2 – 5.2x + 1
What polynomial models the total number of common and Endler’s guppies?
(1 point)
Responses
7.3x2 + 0.8x + 0.7
7.3 x 2 + 0.8 x + 0.7
7.3x2 – 0.8x + 1.3
7.3 x 2 – 0.8 x + 1.3
7.3x2 + 0.8x + 1.3
7.3 x 2 + 0.8 x + 1.3
7.3x2 + 0.8x – 1.3