What is the explicit formula for this geometric sequence?
27, 9, 3, 1, ...
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Answer:
D.) 27 * ( 1/3) ^ (x-1)
Step-by-step explanation:
This is because the first value, 27, indicates the rest state, or the y intercept. The second value, 1/3, is derived from the pattern of the values decreasing by the previous value being divided by 3, or technically multiplied by (1/3). The (x-1) is derived from the original formula for the geometric series.
f(x) = x * r ^ (n-1)
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