In 2000, the number of fixed broadband internet subscribers on Mars was 7.43 million, and was growing at a continuous rate of $59.24 \%$ per year.
a) Supposing the number of subscribers had continued to increase at this rate, find a formula for $I(t)$, the number of fixed broadband internet subscribers (in millions) on Mars $t$ years after 2000.
$I(t) =$

b) By what effective annual growth rate is the number of subscribers increasing?
percent per year

Hint: