Solve.The sales for a gaming console for various years are listed in the table below. 
Let s represent the sales (in billions of dollars) at t years since 1995. Use your graphing calculator to determine the quadratic regression equation for this data set.
A. s = 0.20t2 - 0.70t + 0.81
B. s = 0.065t2 - 0.42t + 0.84
C. s = 0.065t2 - 0.68t + 1.95
D. s = 0.20t2 - 1.50t + 3.02
Answer: C
Mathematics
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