The equation p = 5,000 2t represents the population of an
invasive fish species in a large lake, t years since 2005, when the
fish population in the lake was first surveyed.
1. What was the population in 2005?
2. For this model, what does it mean when t= -2?
3. For t= -2, is the fish population more or less than 1,000? How do you know?