Respuesta :

We have the following:

the formula for this case is the following:

[tex]\begin{gathered} a_n=a_0+d\cdot(n-1) \\ a_0=3 \\ d=7-3=11-7=15-11=19-15=4 \end{gathered}[/tex]

replacing:

[tex]a_n=3+4\cdot(n-1)[/tex]

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