Answer:
Therefore the annual rate of growth 9%.
Explanation:
To find the annual rate, we use the following formula,
[tex]Fv=Pv(1+i)^n[/tex]
Fv= future value
Pv= present value.
i= rate of interest
n= time.
Here Pv=$250, Fv= $1,000, n= 16 years
[tex]\therefore1,000=250(1+i)^{16}[/tex]
[tex]\Rightarrow (1+i)^{16}=\frac{1000}{250}[/tex]
[tex]\Rightarrow i=4^{\frac1{16}}-1[/tex]
[tex]\Rightarrow i=0.09[/tex] (approx)
[tex]\Rightarrow i=9\%[/tex]
Therefore the annual rate of growth 9%.