B
1) In this question, y stands for population, and x stands for year.
2) Since the first year is 2003, then 2020 -2003 = 17. Let's plug into x, this value:
[tex]\begin{gathered} y=150(0.8)^{17} \\ y=3.37\text{ } \\ y\approx3 \end{gathered}[/tex]3) Rounding off to the nearest whole number, the population of Iberian lynx will be approximately 3 lynxes.
