5k - 9 - 2k + 3 = 3k - 6
1 answer:
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Answer:
(c) an = 4·(1/3)^(n-1)
Step-by-step explanation:
The explicit rule for a geometric sequence with first term a1 and common ratio r is ...
an = a1·r^(n-1)
The factor in the recursive rule tells you the common ratio is 1/3, so the explicit rule is ...
an = 4·(1/3)^(n-1) . . . . . . matches choice C
