Whow investigate how to describe a pattem using algobraic language $($i$.$ e$.$ wo are$)8$ z The $3$ dots If we have the sequence $310.17$: shows that the pattern continues forever The general formula for all numeric $($linear$)$ patterns is: $n$ is the position of the number in the sequence c is the term that would have come before the first term, i$.$e$.T_0$ So$,$ for the given sequence, we know the value of b$,$ but we need to work backwards, using opposite operations to find the value of $c.$ In this sequence, $T_0=3-7.$ This means that $c=-4$ We can now write a formula for the sequence: $T_n=7n-41\mathrm{.}4$ We are now going to try this method out for the following sequences and write a formula for each one: $1\mathrm{.}4\mathrm{.}1,5$;$13$;$21$;dots $(3)$