I'm guessing you mean f(x)=15,000(9/8)^x. If this is what you mean, the population would increase by about 12,000 (12030.4870605 to be exact).
Starting equation: f(x)=15,000(9/8)^x
You can clean up the 9/8 to be 1.125
Now what you want to do is find the answer to (9/8)^5 which is 1.8020324707
Next multiply 1.8020324707 by 15,000 and you get 27030.4870605
Finally 27,030.4870605 - 15,000 gives you 12030.4870605. Which means that the population increased by about 12,000.
it's 3 I think
x=5, y= -1
Let's solve your system by substitution.
Step: Solvex+2y=3for x:
x+2y+−2y=3+−2y(Add -2y to both sides)
−3y+3=6(Simplify both sides of the equation)
−3y+3+−3=6+−3(Add -3 to both sides)
(Divide both sides by -3)
x=5(Simplify both sides of the equation)
x=5 and y=−1
I really hope this helped pls mark brainliest if you dont mind. thx :)