
Philip P. answered 09/09/15
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Each term is 6 less than the preceding term:
an = an-1 - 6
where n is the number of the term. For terms 5 and 6, which you're asked to find:
a5 = a5-1 - 6
a5 = a4 - 6
The 4th term (a5) equals 26:
a5 = 26 - 6 = ____
To find a6:
a6 = a5 - 6