Question

Find the first, fourth, and eighth terms of the sequence. A(n) = −3 ∙ 2^x − 1

Answer 1

`\bf A(n)=-3\cdot 2^(n-1)\\\\ -------------------------------\\\\ \textit{first one}\qquad A(1)=-3\cdot 2^(1-1) \\\\\\ \textit{fourth one}\qquad A(4)=-3\cdot 2^(4-1) \\\\\\ \textit{eighth one}\qquad A(8)=-3\cdot 2^(8-1)`