Help! Algebra
posted by Becca .
Find the common ratio r and the value of A1 with the information given.
1. A3=324 A7=64
2. A4=32/3 A8=54

A7/A3 = r^4 = 16/81, so r = 2/3
A8/A4 = r^4 = 54*3/32 = 81/16 = 3/2
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