Use regression to find a quadratic function that best fits the data. Give results to the nearest hundredth.
A. f(x) = 0.15x2 + 38.67x + 891.67
B. f(x) = 0.05x2 - 13.25x + 790.18
C. f(x) = 0.15x2 - 38.67x + 891.67
D. f(x) = 0.05x2 + 13.25x + 790.18
Answer: B
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In 
, one side of 
is diameter 
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A. -15
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