Question

Describe each pattern using "math"/symbolsAND find the three next terms.
927,306,99,30,7,__,__,__

Answer 1

There's not really a nice solution. It would look something like:
\[
a_n=-\frac{1}{2}3^{2-n}(3^n-621)
\]With the next three terms being:
\[
-\frac{2}{3}, -\frac{29}{9}, -\frac{110}{27}
\]