Problemas
Select the formula for the n^th term of the sequence. -9,18,-36,ldots Show your work here -9-2(n-1) -9(-2)^n-1 -9-2(n) -9(-2)^n None of the above
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Patriciomaestro · Tutor durante 5 años
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To find the formula for the $n^{th}$ term of the sequence $-9,18,-36,\ldots$, we need to identify the pattern in the sequence.<br /><br />Let's denote the $n^{th}$ term of the sequence as $a_n$.<br /><br />We can observe that each term in the sequence is obtained by multiplying the previous term by $-2$.<br /><br />So, we can write the formula for the $n^{th}$ term as:<br /><br />$a_n = -9(-2)^{n-1}$<br /><br />Therefore, the correct answer is: $-9(-2)^{n-1}$.
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