Finish the sequence. 20,17,14,____,8,5,____ Finish the sequence.____,16,29,____,55 Find the n=13 if a1=4 4,21,38,55,72,....,____ Find n=7 if a1=-4.5-4.5,-9.5,-14.5,.....,____ If a14=85 and d=9, find a1=____ Find d for -24,-31,-38____

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