SOLUTION: I have to find the nth term in some equations for my exams on monday and i forgot how to do it. The terms are 1 2 3 4 The values are 3 7 11 15 and i have to find the 20th ter

Question 557270: I have to find the nth term in some equations for my exams on monday and i forgot how to do it.
The terms are 1 2 3 4
The values are 3 7 11 15
and i have to find the 20th term
How do i do it?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I have to find the nth term in some equations for my exams on monday and i forgot how to do it.
The terms are 1 2 3 4
The values are 3 7 11 15
and i have to find the 20th term
------
You have an arithmetic sequence with a(1) = 3 and d = 4
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Formula: a(n) = a(1) + (n-1)d
---
So, a(20) = 3 + 19*4 = 3 + 76 = 79
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Cheers,
Stan H.
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