Question

What is the third term of the sequence described by the following explicit formula? an = 9 + (n - 1)8

Answer 1

Answer: Solve for a: a = $\frac{8n+1}{n}$

Solve for n: $n=\frac{1}{a-8}$

Step-by-step explanation:

solve for n: Move all terms to the left side and set them equal to zero. Then set each factor equal to zero.

solve for a: Divide each term in an = 9 + (n−1) ⋅ 8 by n and simplify.