The table shows a geometric sequence with first term 56 and common ratio 1/2. The generic term for such a sequence is ...
an = a1·r^(n-1)
Substituting the problem values, we get ...
y = 56·(1/2)^(x -1)
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<em>Comment on answer choices</em>
All of the answer choices are missing essential math symbols, including division bars, exponentiation symbols, parentheses. As written, the only viable choice is "none of the above."
