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I just need the answer for b​

I just need the answer for b​-example-1
User TonyWilk
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1 Answer

4 votes

Answer:

For an nth term in an arithmetic sequence

U(n) = a + ( n-1)d

a = first term

d = common difference

n = number of terms.

Considering the above picture

a = 9

d = 6 - 9 = - 3

For an nth term of the sequence

U(n) = 9 + (n - 1)-3

= 9 - 3n + 3

= 12 - 3n

Hope this helps

User Rowe Morehouse
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