Answer :
[tex]\text{The answer = P = 15000( 1 - 0.15)}^t[/tex]
The population is decreasing by 15% every year
The initial population = 15,000
Since it decreases every year
[tex]\begin{gathered} P=a(1+r)^t \\ \text{Where a = initial amount},\text{ r = rate, t = time} \end{gathered}[/tex]Decreases every year = (100 - 15)
The rate of the population every year = 75%
[tex]P=15,000(1-0.15)^t[/tex]What this simply means is that the population of California keep decreasing by 15%
Assuming the population of California in 2018 is 15000
By 2019 , it would have decreased by 15%
The new population in 2019 will now be = (100 - 15)% x 15000
= 85% x 15000
= 0.85 x 15000
= 12, 750
Therefore, the population in 2019 will now be 12, 750.... It will keep decreasing like that