SOLUTION: a1=3;d=6an=;a15=

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Question 927432: a1=3;d=6an=;a15=
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
a1 = 3 and d = 6
an =3 + (n-1)6
an = 6n - 3
a15 = 90-3 = 87