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Which of the following equations represents the nth term of the arithmetic sequence?

17, 24, 31, 38, 45, …
an = 17 + 7n
an = 17 + 7(n − 1)
an = 17 − 7n
an = 17 − 7(n − 1)

Sagot :

Answer:

an=17+7(n-1)

Explanation:

an=a+(n-1)d

a=17

d=24-17 =7

an =17+(n-1)7