Question 345516
Hi,
Question shows this is a Arithmetic Sequences with "d"(the difference between the terms) being 3
*Note: Formulas for Arithmetic Sequences, in general, are as follows:
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{{{a[n]=a[1]+(n-1)*d}}}
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{{{S[n]=(n(a[1]+a[n]))/2}}}

If I am understanding Your Question, you are looking for the 30th term in this sequence
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Using the Formula for the nth term
{{{a[n]=a[1]+(n-1)*d}}}

{{{a[30]=a[1]+(30-1)*3}}}
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{{{a[30]= 4 +(29)*3}}}
{{{a[30]= highlight(91)}}}