Answer:
$3,584,000
Step-by-step explanation:
The initial value of the investment = $3500
Since the investment doubles every two years, the function showing the value of the investment after t years is given as:
![f(t)=3500(2)^{(t)/(2)}_{}](https://img.qammunity.org/2023/formulas/mathematics/college/7gi60figzx9zjuaioumqbehhph002v36h9.png)
After 20 years, i.e. When t=20 years
![\begin{gathered} f(20)=3500*2^{(20)/(2)} \\ =3500*2^(10) \\ =\$3,584,000 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/l288997b4xa28odco6e2v7b9czuj5k2wc9.png)
After 20 years the investment is worth $3,584,000.