Question

Find each value.Show calculations for each problem

Answer 1

In the given expression :

`a_n=-8n`

we need to find the value of n at which, an = -24

`\begin{gathered} \text{Substitute the value of a}_n=-24\text{ in teh express}ionofa_n \\ a_n=-8n \\ -24=-8n \\ or \\ -8n=-24 \\ \text{Dividing both side by (-8)} \\ (-8n)/(-8)=(-24)/(-8) \\ n=3 \end{gathered}`

Thus, at n=3, the an = -24