Question

Using a n = a 1 +d(n-1) select equation that represents the arithmetic sequence below:

Answer 1

`\begin{gathered} \text{Sequence is, }\Rightarrow3,6,9,12 \\ a_1=3,d=6-3=3 \\ So\text{, } \\ a_n=3+3(n-1) \\ Thus,\text{option b is correct.} \end{gathered}`