Respuesta :
To find the nth term rule for the arithmetic sequence 8, 15, 22, 29, we start by finding the common difference between each term.
Common difference (d) = second term - first term
d = 15 - 8
d = 7
Now that we have the common difference, we can find the nth term rule. The nth term rule for an arithmetic sequence is given by:
nth term = first term + (n - 1) * common difference
Plugging in the values we have:
nth term = 8 + (n - 1) * 7
nth term = 8 + 7n - 7
nth term = 1 + 7n
Therefore, the nth term rule for the arithmetic sequence 8, 15, 22, 29 is 1 + 7n.
I hope it helps you
Answer:
[tex]\boxed{a_n = 8 + 7(n-1)}[/tex]
Step-by-step explanation:
There are two important pieces of information about an arithmetic sequence:
- the first term
- the common difference between two consecutive terms
We can identify the first term as 8 and the common difference as 15 - 8 = 7.
So, the rule that describes the given arithmetic sequence is:
[tex]a_n = a_1 + d(n-1)[/tex]
[tex]\boxed{a_n = 8 + 7(n-1)}[/tex]
The reason we multiply the difference by (n - 1) rather than n is because the first term (n = 1) doesn't have the difference added to it.