Verified Answer :

dalendrk

\(a_1=1;\ r=3\\\\a_n=a_1r^{n-1}\to a_n=1\cdot3^{n-1}=3^{n-1}\\\\a_7=3^{7-1}=3^6=729\\\\Answer:\boxed{a_7=729}\)

oopsydaisy

The seventh term of a sequence whose first term is 1 and whose common ratio is 3 is 729.

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