Respuesta :
Answer: The population in 1990 or the initial population.
Step-by-step explanation:
Here, the function that shows the population after t years since 1990,
[tex]f(t) = 523(1.099)^t[/tex]
For t = 0,
The population is,
[tex]f(0) = 523(1.099)^0[/tex]
[tex]\implies f(0) = 523[/tex] ( Since, [tex]a^0 = 1[/tex] )
Since, the population is estimated from 1990,
Thus, t = 0 represents the the year 1990,
⇒ f(0) represents the population in 1990,
⇒ The population in 1990 = 523.