9. Sequences, Series, & Induction

Write a recursive formula for the geometric sequence $\left\lbrace18,6,2,\frac23,\ldots\right\rbrace$.

Find the $10^{\th}$ term of the geometric sequence in which $a_1=5$ and $r=2$.

Write a formula for the general or $n^{\th}$ term of the geometric sequence where $a_7=1458$ and $r=-3$.

In Exercises 1–8, write the first five terms of each geometric sequence. a₁ = 5, r = 3

In Exercises 1–8, write the first five terms of each geometric sequence. a₁ = 20, r = 1/2

In Exercises 1–8, write the first five terms of each geometric sequence. a_n = - 4a_(n-1), a₁ = 10

In Exercises 1–8, write the first five terms of each geometric sequence. a_n = - 5a_(n-1), a₁ = - 6