Please help me on 5 I don’t know what I did wrong on the last two

Daviz asked Oct 11, 2023

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Daviz asked Oct 11, 2023

by Daviz

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10 votes

ANSWER:

$\begin{gathered} a_n=18-3(n-1) \\ a_(100)=-279 \end{gathered}$

Explanation:

We have the following sequence:

$18,15,12,9\ldots$

Therefore, the sequence is:

Now, when n is 100:

$\begin{gathered} a_(100)=18-3(100-1) \\ a_(100)=18-297 \\ a_(100)=-279 \end{gathered}$

Aanund answered Oct 15, 2023

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