Answer:
Therefore the annual rate of growth 9%.
Step-by-step explanation:
To find the annual rate, we use the following formula,
![Fv=Pv(1+i)^n](https://img.qammunity.org/2021/formulas/business/college/5f4kzcyzubudg0oap2t2seipuewu7ubvct.png)
Fv= future value
Pv= present value.
i= rate of interest
n= time.
Here Pv=$250, Fv= $1,000, n= 16 years
![\therefore1,000=250(1+i)^(16)](https://img.qammunity.org/2021/formulas/business/college/8hyi12fdt02iyfoagykx28hkaki36gc2sr.png)
![\Rightarrow (1+i)^(16)=(1000)/(250)](https://img.qammunity.org/2021/formulas/business/college/ctfqdoocrbvrvbwdj7oktgk5dm1soqcuue.png)
![\Rightarrow i=4^{\frac1{16}}-1](https://img.qammunity.org/2021/formulas/business/college/gfyc8helwq223xf12r58scdsjqymr8ubm7.png)
(approx)
![\Rightarrow i=9\%](https://img.qammunity.org/2021/formulas/business/college/wtzdplrlg26y615odlwh4rk6szz0oqnx71.png)
Therefore the annual rate of growth 9%.