Chapter 5.2B, Problem 25A

To determine

a)

To Find:

The missing terms of the arithmetic or geometric sequence ${}^{-}4{,}^{-}16\underset{\_}{},\underset{\_}{}{,}^{-}1024$.

To determine

b)

To Find:

The next two terms of the arithmetic or geometric sequence and their common difference or ratio and $n^{th}$ term $\underset{\_}{},27{,}^{-}9,3,\underset{\_}{}$.