Question

I need help solving an answering this practice problems from my pre-calculus prep guide

Answer 1

The general formula of a geometric sequence is:

`a_n=a_1(r)^(n-1)`

where,

n = 6

a₁ = -8100

r = -0.1

Replacing on the formula:

`\begin{gathered} a_6\text{ = -8100}*(-0.1)^(6-1) \\ a_6\text{ = 0.081} \end{gathered}`