ANSWER
The population in 2000 is 525.5
Step-by-step explanation
The population is modeled by the equation:

Where y=population (in thousands)
t=the time (in years) with t=0 for the year 2000.
To find the population in the year 2000, we substitite t=0 into the equation to get:

Perform the multiplication in the exponent:

Note that any non-zero number exponent zero is 1.

Any number multiplied by 1 is the same number;

The population in 2000 is 525.5