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The first term of an arithmetic sequence is 4 and the fifth term is 16. what is the nth term of the sequence? a. 4n b. 3n 1 c. 5n ��� 1 d. 4n 1 please select the best answer fro…

The first term of an arithmetic sequence is 4 and the fifth term is 16. what is the nth term of the sequence? a. 4n b. 3n 1 c. 5n ��� 1 d. 4n 1 please select the best answer fro…
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1 vote
The first term of an arithmetic sequence is 4 and the fifth term is 16. what is the nth term of the sequence?

a. 4n
b. 3n 1
c. 5n ��� 1
d. 4n 1 please select the best answer from the choices provided a b c d

asked
User Andy Gherna
by
8.0k points

1 Answer

4 votes
T1 = 4
4 = a

T5 = 16
16 = 4 + 4d
4d = 12
d = 3

Tn = 4 + ( n - 1 ) 3
Tn = 4 + 3n - 3
Tn = 3n + 1

the answer is b
answered
User Sharry
by
8.1k points
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