13. The third term in an arithmetic sequence is 10 and the fifth term is 26. If the first term is, which is an equation for the nth term of this sequence?

Question

Odin Mathews

Mathematics

22 July, 01:39

13. The third term in an arithmetic sequence is 10 and the fifth term is 26. If the first term is, which is an equation for the nth term of this sequence?

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Answers (1)

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Esteban Hendrix · Answer 1

N=3:

A) an = 8*3+10 = 34

B) an = 8*3 - 14 = 10 OK

C) an = 16*3+10 = 58

D) an = 16*3 - 38 = 10 OK

n=5:

B) an = 8*5-14 = 26 OK

D) an = 16*5 - 38 = 42

So the answer is B