SOLUTION: Find the general term of a sequence whose first four terms are given. 28.) 2, -1,-4,-7,…

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Question 120037: Find the general term of a sequence whose first four terms are given.
28.)
2, -1,-4,-7,…

Answer by stanbon(48568) About Me  (Show Source):
You can put this solution on YOUR website!
Find the general term of a sequence whose first four terms are given.
2, -1,-4,-7,…
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The sequence has a common difference of d=-3 so it is arithmetic.
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Formula: a(n)=a(1)+(n-1)d
Your sequence formula:
a(n)=2+(n-1)(-3)
a(n)=2-3n+3
a(n)=5-3n
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Cheers,
Stan H.