Find the general term of the arithmetic sequence.
-$6.9,7.7,8.5,9.3,10.1 , \ldots$
A) $a _ { n } = 0.8 n + 6.1$
B) $a _ { n } = 0.7 n + 6.1$
C) $a _ { n } = 0.8 n + 5.9$
D) $a _ { n } = 0.8 n + 6.9$

Question

Quizplus · Accepted Answer

The common difference $d$ is $7.7 - 6.9 = 0.8$. The first term $a_1 = 6.9$. The general term of an arithmetic sequence is given by $a_n = a_1 + (n - 1)d$. Substituting $a_1 = 6.9$ and $d = 0.8$ gives $a_n = 6.9 + 0.8(n - 1) = 0.8n + 6.1$.

Find the General Term of the Arithmetic Sequence 6.9,7.7,8.5,9.3,10.1,…6.9,7.7,8.5,9.3,10.1 , \ldots6.9,7.7,8.5,9.3,10.1,…

Find the General Term of the Arithmetic Sequence $6.9,7.7,8.5,9.3,10.1 , \ldots$