SAT Question 8643d906: Linear Functions answer and explanation with Desmos solution

Choice C is correct. It's given that $P(t)$ represents the population of snow leopards $t$ years after $1990$. $P(30)=550$ corresponds to $t=30$ and $P(t)=550$. It follows that $t=30$ corresponds to $30$ years after $1990$, or $2020$. Thus, the best interpretation of $P(30)=550$ is that the snow leopard population in this area is predicted to be $550$ in the year $2020$.