Question

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)

Answer 1

If you add them this is what you get:

3.1x^2+6x+0.3
4.2x2-5.2x+1
----------------------
7.3x^2+0.8x+1.3