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Answered

12,27,42,57

an=_______

a18=______

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12274257ana18I Need Help ASAP First Person To Asnwer Gets Brainliest class=

Answer :

REGUSER315IN
a1=12, a2=27, a3=42, etc. The pattern is that you’re always adding 15 after starting with 12. So the general rule is...

an=12+15(n-1)

So then...

a18=12+15(18-1)
a18=12+15(17)
a18=267

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