Using an exponential function, it is found that you would have $10,240 after 18 years.
An increasing exponential function is modeled by:
[tex]A(t) = A(0)(1 + r)^t[/tex]
In which:
Considering the initial value of $2,500, and the growth rate of 60% every 6 years, the equation is given by:
[tex]A(t) = 2500(1.6)^\frac{t}{6}[/tex]
Hence, after 18 years, the amount is given by:
[tex]A(18) = 2500(1.6)^\frac{18}{6} = 10240[/tex]
More can be learned about exponential functions at https://brainly.com/question/25537936
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