SOLUTION: Is my answer correct? I am supposed to find the first five terms and the tenth term given the explicit formula for an arithmetic sequence. an = -10 – 3(n – 1) -16,-19,-22,-

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Question 1008763: Is my answer correct?
I am supposed to find the first five terms and the tenth term given the explicit formula for an arithmetic sequence.
an = -10 – 3(n – 1)
-16,-19,-22,-25,-28
Tenth term:-43
Found 3 solutions by fractalier, stanbon, MathTherapy:
Answer by fractalier(6550)   (Show Source): You can put this solution on YOUR website!
Not quite.
a1 = -10
a2 = -13
a3 = -16
a4 = -19
a5 = -22
a10 = -10 - 3(10-1) = -10 - 3(9) = -37
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
find the first five terms and the tenth term given the explicit formula for an arithmetic sequence.
a(n) = -10 – 3(n – 1)
a(1) = -10 - 3*0 = -10
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a(2) = -10 - 3(2-1) = -10 -3 = -13
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a(3) = -10 - 3(3) = -10-9 = -19
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etc..
a(10) = -10 - 2(10-1) = -10-2*9 = -28
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Cheers,
Stan H.
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Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Is my answer correct?
I am supposed to find the first five terms and the tenth term given the explicit formula for an arithmetic sequence.
an = -10 – 3(n – 1)
-16,-19,-22,-25,-28
Tenth term:-43
From the AP formula for a term, n: , it's obvious from the given equation:  that term 1, or , and d,

or the common difference is: - 3

2nd term: Term 1 + d(2 - 1), or - 10 - 3(1), or   

3rd term: Term 1 + d(3 - 1), or - 10 - 3(2), or   

4th term: Term 1 + d(4 - 1), or - 10 - 3(3), or   

5th term: Term 1 + d(5 - 1), or - 10 - 3(4), or   

10th term: Term 1 + d(10 - 1), or - 10 - 3(9), or  

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